It happened to me too a couple of times since installing a fresh install of Hardy on my Dell D400 (note: I just bought a new 5400 RPM 80 GB Seagate disk, I had a 4200 RPM 30 GB Hitachi in the original configuration. I had to make a workaround for the laptop disk killer bug for the new disk).
On Gutsy I didn't have any problems with Ubuntu. Suspend worked almost perfect (bluetooth didn't wake up after some sessions). Compiz worked flawlessly no lockups, no hiccups. Now I have occasional hiccups, inconsistent touchpad speed (sometimes it works, sometimes it doesn't), I turned off Compiz what doesn't seem to make much difference. And of course complete halts with Caps and Scroll Lock lights flashing (it this kernel panic?). For the hiccups I suspect Xorg which jumped to only 2% of the system usage every now and then, but nevertheless made the system unresponsive for a few seconds. The kernel I'm using is '2.6.24-16-generic'. My dmesg is in the attachment. ** Attachment added: "my_dmesg" http://launchpadlibrarian.net/14376140/my_dmesg -- [Hardy] D820 - System locks completely https://bugs.launchpad.net/bugs/206329 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
