i am experiencing the same freeze problem on the same ThinkPad model (with an Intel 965GM video chipset) after updating from 10.10 to 11.04 . I can't say that the system is unresponsive, but it freezes periodical every 10 seconds for around one second.
Selecting an old (pre upgrade) kernel (2.6.35) in grub does not help. The system freezes already at the login screen (tested kdm and lxdm). I was experiencing the same problem on Kubuntu 11.04 running from a live installation CD. Kubuntu 10.10 is running without problems from a live installation CD. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/711284 Title: After natty update today, system is unresponsive and freezes often -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs