diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a9b09c5d..973ad4b42 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 - **New feature**: `Linkify` and `Clean Links`, enabled by default
  - Linkify will turn text URLs into working links.
  - Clean Links will get rid of spoiler and code tags in linkified URLs used to bypass spam blocks.
+- New desktop notification:
+ - The QR will now warn you when you are running low on cached captchas while auto-posting.
 
 ## 3.9.0 - *2013-08-18*
 
diff --git a/src/Monitoring/Unread.coffee b/src/Monitoring/Unread.coffee
index 9c31a2dd2..fdcbc7f16 100644
--- a/src/Monitoring/Unread.coffee
+++ b/src/Monitoring/Unread.coffee
@@ -106,7 +106,7 @@ Unread =
       window.focus()
     setTimeout ->
       notif.close()
-    , 5 * $.SECOND
+    , 7 * $.SECOND
 
   onUpdate: (e) ->
     if e.detail[404]
diff --git a/src/Posting/QR.coffee b/src/Posting/QR.coffee
index f3526edf1..5a5d62219 100644
--- a/src/Posting/QR.coffee
+++ b/src/Posting/QR.coffee
@@ -125,7 +125,7 @@ QR =
     setTimeout ->
       notif.onclose = null
       notif.close()
-    , 5 * $.SECOND
+    , 7 * $.SECOND
     <% } %>
   notifications: []
   cleanNotifications: ->
@@ -1101,7 +1101,16 @@ QR =
     }
 
     # Enable auto-posting if we have stuff to post, disable it otherwise.
-    QR.cooldown.auto = QR.posts.length > 1 and isReply
+    postsCount = QR.posts.length
+    QR.cooldown.auto = postsCount > 1 and isReply
+    if QR.cooldown.auto and QR.captcha.isEnabled and (captchasCount = QR.captcha.captchas.length) < 3 and captchasCount < postsCount
+      notif = new Notification 'Quick reply warning',
+        body: "You are running low on cached captchas. Cache count: #{captchasCount}."
+        icon: Favicon.logo
+      notif.onclick = -> window.focus()
+      setTimeout ->
+        notif.close()
+      , 7 * $.SECOND
 
     unless Conf['Persistent QR'] or QR.cooldown.auto
       QR.close()