I have the same problem and also think it is a problem with the 2.6.24 kernel. I have tried 2.6.24-17, -18, and -19 with the same results.
I have disabled compiz, nvidia proprietary drivers, and Open GL screensavers but still have freezes. Trying Alt+SysRq REISUB does not work since my mouse and keyboard are both USB and I get no response from them. I previously had Gutsy without problems. I upgraded from the desktop-i386 disk. I have reinstalled Gutsy on a separate partition and it is working OK (2.6.22-14). ASRock 4CoreDual-SATA2 motherboard with onboard audio, serial, parallel, midi, and game ports disabled. IDE Drives Only (not using any SATA) E6600 Dual Core 2.4 MHz NVidia GeForce 7600 GS AGP Soundblaster Audigy LS PCI PCI USB/Firewire Card I attached a sysinfo dump of my configuration. Tony ** Attachment added: "sysinfo.log" http://launchpadlibrarian.net/15558921/sysinfo.log -- Hardy Freeze/Lockup with kernel 2.6.24-16-generic up to 2.6.24-19-generic https://bugs.launchpad.net/bugs/239021 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