Public bug reported:

Ubuntu release: Kubuntu Jaunty, latest update from 2009-03-06

Some regions in many applications are sometimes incorrectly rendered. I
am using opensource ATI driver on my "ATI Technologies Inc M24 1P
[Radeon Mobility X600]". The problem occurs regardless of desktop
effects are on or off. See attached screenshot.

Maybe related issue is taskbar popup rendering - see also the attached
screenshot. This occures only if desktop effects are on and after couple
of minutes since starting KDE. Then it is always reproducible.

Maybe also related - after couple of minutes since starting KDE the
scrolling gets very choppy - most visible in konsole, less in konqueror.
Also gui responsiveness gets slower and bit laggy. This is also
regardless of desktop effects. But if desktop effects are turned on,
then animations are stay smooth.

There is nothing special in dmesg, I am also attaching xorg logs.

Please inform me, whether these three symptoms are related. If not, I
will split this single issue report to multiple instances. Thanks in
advance.

** Affects: ubuntu
     Importance: Undecided
         Status: New

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corrupted graphics, choppy scrolling
https://bugs.launchpad.net/bugs/338628
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