Comment 18 for bug 576352

Another remark - I didn't experience this problem with 10.04 originally only after some weeks of usage (and updates). To test this I have yesterday re-installed 10.04 and accepted all updates except the following packages which I have locked:

linux-generic 2.6.32.21.22
linux-headers-generic 2.6.32.21.22
linux-image-generic 2.6.32.21.22
xserver-common 2:1.7.6-2ubuntu7
xserver-xorg-core 2:1.7.6-2ubuntu7

My system runs stable with this configuration whereas I suffered from random freezes before with a fully up-to-date 10.04. My configuration is a Thinkpad W510 with the nVidia graphics chipset (using Nouveau driver). Maybe it helps to have a closer look into what changed between those packages and their latest versions.