[Bug 1017913] [NEW] unresponsive grabbing hand pointer appears with no reason

[pype]

Public bug reported:

Occasionally, when using FF13, the mouse pointer changes to the
"grabbing hand" icon but will not release. When this happens, I can move
the mouse around but cannot click on anything in Firefox or anywhere
else in the Ubuntu GUI. I can still use some (not all) keyboard
navigation, but the mouse pointer seems to be permanently locked.

Firefox needs to be killed so that the mouse cursor can be used again.

I can reproduce it fairly consistently in the old blogger post-edition
interface: all I have to do is to select a block of text, click the
"insert link" button, and then try to scroll with the mouse wheel.

It seems to happen in different circumstances for other users as well, see http://ubuntuforums.org/showthread.php?t=2004378 for an overview.
firefox:
  Installed: 13.0+build1-0ubuntu0.10.04.1
  Candidate: 13.0.1+build1-0ubuntu0.10.04.1
  Version table:
     13.0.1+build1-0ubuntu0.10.04.1 0
        500 http://be.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
        500 http://fr.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
        500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
 *** 13.0+build1-0ubuntu0.10.04.1 0
        100 /var/lib/dpkg/status
     3.6.3+nobinonly-0ubuntu4 0
        500 http://be.archive.ubuntu.com/ubuntu/ lucid/main Packages
        500 http://fr.archive.ubuntu.com/ubuntu/ lucid/main Packages

Description:    Ubuntu 10.04.4 LTS
Release:        10.04

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1017913

Title:
  unresponsive grabbing hand pointer appears with no reason

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