problems after update to firefox6

[pbdeblank]

Using Ubuntu 11.04, with unity

after update to FF6:
1) when starting FF after bootup, freezes and have forcequit. next start of FF is OK
2) when using ATI driver, start OK but screen gets crazy when moving cursor e.g. to favorites pane.
    when using free driver no problem
3) when using free driver, speed of FishiE demo is ca 5 times slower than with FF5 (not possible to test with ATI driver because of problem 2)

uninstalling ubufox extensions did not help
uninstaling and reinstalling FF6 did not help either

(no problems with Chrome btw)

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: firefox 6.0+build1+nobinonly-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic i686
Architecture: i386
Date: Wed Aug 17 13:11:45 2011
FirefoxPackages:
 firefox 6.0+build1+nobinonly-0ubuntu0.11.04.1
 flashplugin-installer 10.3.183.4ubuntu0.11.04.1
 adobe-flashplugin N/A
 icedtea-plugin 1.1.1-0ubuntu1~11.04.1
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANGUAGE=nl_NL:en
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox
UpgradeStatus: Upgraded to natty on 2011-04-28 (110 days ago)

[Micah Gersten (micahg)]

Thank you for reporting this to Ubuntu, Have you changed layers.acceleration.force-enabled in about:config?

[pbdeblank (blankp)]

Micah Gersten schreef op wo 17-08-2011 om 16:15 [+0000]:
> Thank you for reporting this to Ubuntu, Have you changed
> layers.acceleration.force-enabled in about:config?
>
> ** Changed in: firefox (Ubuntu)
> Status: New => Incomplete
>
Thanks very much !
changing true -> false solved the problems.

now with the "free driver"FF6 is faster than chrome13 in the FishIE test
with the ATI driver Chrome stays about the same but FF6 is now slower

Thanks again
Peter de Blank

[Micah Gersten (micahg)]

This bug report is being closed due to your last comment regarding this being fixed with a config change. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.