Hi,
I have the same problem on a Dell Inspiron 6400 with a Radeon Mobility
X1400 GPU. It happens with both radeon and radeonhd drivers. So in my
opinion it is not a problem with graphics drivers. Maybe Jason is right,
it could be an Xorg problem, I will try the downgrade later on.
Turning DRI off
I can confirm zeroathome's observation.It always happens when opening
minor windows. It is strange that disabling desktop effects and also
switching to another kernel does not work for me.
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[RV250][JAUNTY] X Freezes with Radeon driver EXA/XAA Composite
https://bugs.launchpad.net/bugs/348332
Yo