Title text tooltip disappears (again)

[Ariel J. Birnbaum]

The tooltip displaying the title text for an element (in my case, the comic at http://xkcd.com/) disappears automatically after approximately a second, without any user input.

This behaviour has been reported in Bugs #239462 and #633210 (at least), and per the listed solutions this shouldn't be happening again.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: firefox 10.0.2+build1-0ubuntu0.11.10.1
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic i686
NonfreeKernelModules: openafs nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: arielb 2003 F.... pulseaudio
BuildID: 20120216101208
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfe220000 irq 49'
   Mixer name : 'Analog Devices AD1984'
   Components : 'HDA:11d41984,17aa20bb,00100400'
   Controls : 32
   Simple ctrls : 20
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7KHT24WW-1.08'
   Mixer name : 'ThinkPad EC 7KHT24WW-1.08'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Channel: release
Date: Wed Feb 29 11:39:30 2012
EcryptfsInUse: Yes
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
IncompatibleExtensions: NoScript - ID={73a6fe31-595d-460b-a920-fcc0f8843232}, Version=2.3.2, minVersion=1.9a2, maxVersion=1.9.6, Location=app-profile, Type=extension, Active=Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
IpRoute:
 default via 9.148.12.4 dev eth2 proto static
 9.148.12.0/24 dev eth2 proto kernel scope link src 9.148.12.176 metric 1
 169.254.0.0/16 dev eth2 scope link metric 1000
IwConfig: Error: [Errno 2] No such file or directory
Profiles: Profile0 (Default) - LastVersion=10.0.2/20120216101208 (Running)
RfKill: Error: [Errno 2] No such file or directory
RunningIncompatibleAddons: True
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/11/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETC6WW (2.26 )
dmi.board.name: 6457A26
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7LETC6WW(2.26):bd05/11/2009:svnLENOVO:pn6457A26:pvrThinkPadT61p:rvnLENOVO:rn6457A26:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6457A26
dmi.product.version: ThinkPad T61p
dmi.sys.vendor: LENOVO

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.