Re: Kubuntu 11.04 freezes
I'm running debian testing with KDE 4.6.3 and NVIDIA 270.41.19 at my old ASUS laptop with GeForce 7300 GO. When I turn on visual effects in KDE the next message appears in .xsession-errors log:
link XMLID_36_ hasn't been detected!
Couldn't find node desktop-northeast. Skipping rendering
Effects doesn't turn on. Sometimes my desktop freezes as You've described. The same issue was when I tried to use compiz instead of kwin. But everything worked fine with NVIDIA 260 series drivers. At the same time visual effects work great at my desktop computer with NVIDIA GTS250 GPU and 270.41.19 driver version.