diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 4a2f73e0..800d8b47 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,3 +1,36 @@
+2026-03-19
+ui: improve agent status display on device detail page
+  - Wrap agent name and icon inside the offline amber badge so it's clear what is offline
+  - Add "Agent:" label before the agent indicator in all states (cloud, online, offline)
+  Files: lib/towerops_web/live/device_live/show.html.heex
+
+2026-03-19
+fix: subscriber count pluralization ("1 sub" instead of "1 subs")
+  - Use ngettext in format_subscriber_count in device list and dashboard
+  - Dashboard impact column was showing "73s" (appended "s" to number) — now shows "73 subs"
+  Files: lib/towerops_web/live/device_live/index.ex,
+         lib/towerops_web/live/dashboard_live.ex,
+         lib/towerops_web/live/dashboard_live.html.heex
+
+2026-03-19
+fix: show ms unit for ping/http/tcp/dns check result values
+  - format_check_value now appends " ms" for latency-based check types
+  Files: lib/towerops_web/live/device_live/show.ex
+
+2026-03-19
+refactor: activity feed from vertical timeline to structured log table
+  - Replace left-anchored timeline with full-width table: TIME | TYPE | EVENT | DEVICE/SITE
+  - Colored left bar per row replaces timeline dot for severity
+  - Period group headers become table section rows
+  Files: lib/towerops_web/live/activity_feed_live.html.heex
+
+2026-03-19
+fix: pre-existing test failures
+  - TimeSeriesTest: switch to async: false to avoid TimescaleDB chunk creation deadlocks
+  - settings_live_test: property test now skips assertion when grapheme count < 2 (combining chars)
+  Files: test/towerops_web/graphql/resolvers/time_series_test.exs,
+         test/towerops_web/live/org/settings_live_test.exs
+
 2026-03-17
 fix: DNS and ping checks not executing in production
   - ensure_default_ping_check now calls schedule_check after creating the check
diff --git a/lib/towerops_web/live/activity_feed_live.html.heex b/lib/towerops_web/live/activity_feed_live.html.heex
index 8a40d556..f1131eea 100644
--- a/lib/towerops_web/live/activity_feed_live.html.heex
+++ b/lib/towerops_web/live/activity_feed_live.html.heex
@@ -132,126 +132,152 @@
         </span>
       </div>
 
-      <%= for {period, period_items} <- @grouped_items do %>
-        <%!-- Time Period Header --%>
-        <div class="sticky top-0 z-10 flex items-center gap-3 py-2 mb-2 mt-6 first:mt-0">
-          <div class="h-px flex-1 bg-gray-200 dark:bg-gray-700"></div>
-          <span class="flex-shrink-0 text-xs font-semibold uppercase tracking-wider text-gray-500 dark:text-gray-400 bg-gray-50 dark:bg-gray-900 px-3 py-1 rounded-full">
-            {period}
-            <span class="ml-1 text-gray-400 dark:text-gray-500 font-normal">
-              ({length(period_items)})
-            </span>
-          </span>
-          <div class="h-px flex-1 bg-gray-200 dark:bg-gray-700"></div>
-        </div>
+      <div class="rounded-lg border border-gray-200 dark:border-gray-700 overflow-hidden">
+        <table class="w-full text-sm border-collapse">
+          <thead>
+            <tr class="border-b border-gray-200 dark:border-gray-700 bg-gray-50 dark:bg-gray-800/80">
+              <th class="w-1 p-0"></th>
+              <th class="py-2 pl-3 pr-4 text-left text-xs font-semibold uppercase tracking-wider text-gray-500 dark:text-gray-400 whitespace-nowrap w-28">
+                Time
+              </th>
+              <th class="py-2 px-3 text-left text-xs font-semibold uppercase tracking-wider text-gray-500 dark:text-gray-400 w-28">
+                Type
+              </th>
+              <th class="py-2 px-3 text-left text-xs font-semibold uppercase tracking-wider text-gray-500 dark:text-gray-400">
+                Event
+              </th>
+              <th class="py-2 px-3 text-left text-xs font-semibold uppercase tracking-wider text-gray-500 dark:text-gray-400 w-48">
+                Device / Site
+              </th>
+              <th class="w-8 p-0"></th>
+            </tr>
+          </thead>
+          <tbody class="bg-white dark:bg-gray-900 divide-y divide-gray-100 dark:divide-gray-800">
+            <%= for {period, period_items} <- @grouped_items do %>
+              <%!-- Period group header row --%>
+              <tr class="bg-gray-50/80 dark:bg-gray-800/40">
+                <td colspan="6" class="px-4 py-1.5">
+                  <span class="text-xs font-semibold uppercase tracking-wider text-gray-500 dark:text-gray-400">
+                    {period}
+                  </span>
+                  <span class="ml-1.5 text-xs text-gray-400 dark:text-gray-500">
+                    ({length(period_items)})
+                  </span>
+                </td>
+              </tr>
 
-        <div class="relative">
-          <%!-- Vertical timeline line --%>
-          <div class="absolute left-5 top-0 bottom-0 w-0.5 bg-gray-200 dark:bg-gray-700"></div>
+              <%= for item <- period_items do %>
+                <tr
+                  id={item.id}
+                  class={[
+                    "group transition-colors hover:bg-gray-50 dark:hover:bg-gray-800/50",
+                    item.severity == :critical && "bg-red-50/50 dark:bg-red-900/10"
+                  ]}
+                >
+                  <%!-- Severity bar --%>
+                  <td class="w-1 p-0">
+                    <div class={[
+                      "w-1 h-full min-h-[2.5rem]",
+                      severity_dot_color(item.severity, item.type)
+                    ]}>
+                    </div>
+                  </td>
 
-          <div class="space-y-1">
-            <%= for item <- period_items do %>
-              <div
-                id={item.id}
-                class={[
-                  "relative flex items-start gap-4 pl-12 py-3 group rounded-lg transition-colors",
-                  "hover:bg-gray-50 dark:hover:bg-gray-800/50",
-                  item.severity == :critical && "bg-red-50/50 dark:bg-red-900/10"
-                ]}
-              >
-                <%!-- Timeline dot --%>
-                <div class={[
-                  "absolute left-3.5 top-4 h-3 w-3 rounded-full border-2 border-white dark:border-gray-900 ring-2 ring-transparent group-hover:ring-gray-200 dark:group-hover:ring-gray-700 transition-all",
-                  severity_dot_color(item.severity, item.type)
-                ]}>
-                </div>
+                  <%!-- Time --%>
+                  <td
+                    class="py-2.5 pl-3 pr-4 whitespace-nowrap align-top"
+                    title={Calendar.strftime(item.timestamp, "%Y-%m-%d %H:%M:%S UTC")}
+                  >
+                    <div class="flex items-center gap-1.5">
+                      <.icon
+                        name={item.icon}
+                        class={[
+                          "h-3.5 w-3.5 flex-shrink-0",
+                          severity_icon_color(item.severity, item.type)
+                        ]}
+                      />
+                      <span class="text-xs text-gray-500 dark:text-gray-400 tabular-nums">
+                        {relative_time(item.timestamp, @now)}
+                      </span>
+                    </div>
+                  </td>
 
-                <%!-- Content --%>
-                <div class="flex-1 min-w-0">
-                  <div class="flex items-center gap-2 flex-wrap">
-                    <.icon
-                      name={item.icon}
-                      class={[
-                        "h-4 w-4 flex-shrink-0",
-                        severity_icon_color(item.severity, item.type)
-                      ]}
-                    />
-                    <span
-                      class="text-xs text-gray-500 dark:text-gray-400 tabular-nums"
-                      title={Calendar.strftime(item.timestamp, "%Y-%m-%d %H:%M:%S UTC")}
-                    >
-                      {relative_time(item.timestamp, @now)}
-                    </span>
+                  <%!-- Type --%>
+                  <td class="py-2.5 px-3 whitespace-nowrap align-top">
                     <span class={[
                       "inline-flex items-center rounded-full px-1.5 py-0.5 text-[10px] font-medium",
                       type_badge_class(item.type)
                     ]}>
                       {type_label(item.type)}
                     </span>
-                    <%!-- Device/site link --%>
+                  </td>
+
+                  <%!-- Event --%>
+                  <td class="py-2.5 px-3 align-top">
+                    <p class={[
+                      "text-sm font-medium leading-snug",
+                      severity_text_color(item.severity, item.type)
+                    ]}>
+                      <%= if item.link do %>
+                        <.link navigate={item.link} class="hover:underline">{item.summary}</.link>
+                      <% else %>
+                        {item.summary}
+                      <% end %>
+                    </p>
+                    <p
+                      :if={item.detail && item.detail != ""}
+                      class="mt-0.5 text-xs text-gray-500 dark:text-gray-400 leading-snug"
+                    >
+                      {item.detail}
+                    </p>
+                  </td>
+
+                  <%!-- Device / Site --%>
+                  <td class="py-2.5 px-3 align-top">
                     <.link
                       :if={item.device_name && item.link}
                       navigate={item.link}
-                      class="inline-flex items-center gap-1 text-xs font-medium text-blue-600 hover:text-blue-800 dark:text-blue-400 dark:hover:text-blue-300"
+                      class="inline-flex items-center gap-1 text-xs font-medium text-blue-600 hover:text-blue-800 dark:text-blue-400 dark:hover:text-blue-300 leading-snug"
                     >
-                      <.icon name="hero-server-stack" class="h-3 w-3" />
+                      <.icon name="hero-server-stack" class="h-3 w-3 flex-shrink-0" />
                       {item.device_name}
                     </.link>
                     <span
                       :if={item.device_name && !item.link}
-                      class="inline-flex items-center gap-1 text-xs text-gray-500 dark:text-gray-400"
+                      class="inline-flex items-center gap-1 text-xs text-gray-600 dark:text-gray-300 leading-snug"
                     >
-                      <.icon name="hero-server-stack" class="h-3 w-3" />
+                      <.icon name="hero-server-stack" class="h-3 w-3 flex-shrink-0" />
                       {item.device_name}
                     </span>
-                  </div>
+                    <div
+                      :if={item.site_name}
+                      class="mt-0.5 inline-flex items-center gap-1 text-xs text-gray-400 dark:text-gray-500"
+                    >
+                      <.icon name="hero-map-pin" class="h-3 w-3 flex-shrink-0" />
+                      {item.site_name}
+                    </div>
+                  </td>
 
-                  <p class={[
-                    "mt-0.5 text-sm font-medium",
-                    severity_text_color(item.severity, item.type)
-                  ]}>
-                    <%= if item.link do %>
-                      <.link navigate={item.link} class="hover:underline">
-                        {item.summary}
+                  <%!-- Link arrow --%>
+                  <td class="py-2.5 px-2 align-top">
+                    <div
+                      :if={item.link}
+                      class="opacity-0 group-hover:opacity-100 transition-opacity"
+                    >
+                      <.link
+                        navigate={item.link}
+                        class="text-gray-400 hover:text-blue-500 dark:text-gray-600 dark:hover:text-blue-400"
+                      >
+                        <.icon name="hero-arrow-right" class="h-4 w-4" />
                       </.link>
-                    <% else %>
-                      {item.summary}
-                    <% end %>
-                  </p>
-
-                  <p
-                    :if={item.detail && item.detail != ""}
-                    class="mt-0.5 text-xs text-gray-500 dark:text-gray-400"
-                  >
-                    {item.detail}
-                  </p>
-
-                  <div
-                    :if={item.site_name}
-                    class="mt-0.5 inline-flex items-center gap-1 text-xs text-gray-400 dark:text-gray-500"
-                  >
-                    <.icon name="hero-map-pin" class="h-3 w-3" />
-                    {item.site_name}
-                  </div>
-                </div>
-
-                <%!-- Link arrow --%>
-                <div
-                  :if={item.link}
-                  class="flex-shrink-0 opacity-0 group-hover:opacity-100 transition-opacity"
-                >
-                  <.link
-                    navigate={item.link}
-                    class="text-gray-400 hover:text-blue-500 dark:text-gray-600 dark:hover:text-blue-400"
-                  >
-                    <.icon name="hero-arrow-right" class="h-4 w-4" />
-                  </.link>
-                </div>
-              </div>
+                    </div>
+                  </td>
+                </tr>
+              <% end %>
             <% end %>
-          </div>
-        </div>
-      <% end %>
+          </tbody>
+        </table>
+      </div>
 
       <%!-- Load More --%>
       <div :if={@has_more} class="mt-6 text-center">
diff --git a/lib/towerops_web/live/device_live/show.ex b/lib/towerops_web/live/device_live/show.ex
index 6eca708f..69d8dacc 100644
--- a/lib/towerops_web/live/device_live/show.ex
+++ b/lib/towerops_web/live/device_live/show.ex
@@ -1805,6 +1805,7 @@ defmodule ToweropsWeb.DeviceLive.Show do
       "snmp_sensor" -> format_check_sensor_value(value, check.config)
       "snmp_processor" -> "#{Float.round(value, 1)}%"
       "snmp_storage" -> "#{Float.round(value, 1)}%"
+      t when t in ["ping", "http", "tcp", "dns"] -> "#{Float.round(value, 2)} ms"
       _ -> value |> Float.round(2) |> to_string()
     end
   end
diff --git a/priv/static/changelog.txt b/priv/static/changelog.txt
index cc5cd2a0..4661e4c5 100644
--- a/priv/static/changelog.txt
+++ b/priv/static/changelog.txt
@@ -1,3 +1,10 @@
+2026-03-19 — UI Improvements
+* Agent offline status on device pages is now clearly labeled with the agent name inside the badge
+* Subscriber counts now correctly show "1 sub" (singular) instead of "1 subs"
+* Dashboard outage impact column now shows subscriber counts instead of a value that looked like seconds
+* Check result values for ping and service checks now display with their unit (ms)
+* Activity feed redesigned as a structured log table for easier scanning across the full display
+
 2026-03-17 — Check Execution Fixes
 * Fixed DNS and ping checks not executing in production
 * Ping checks now automatically schedule when created for new devices