After disabling GDM and booting into text mode the mouseemu process was still present and running at full CPU. The fans wound up to full again and did not go away even several minutes after killing the mouseemu process.
The following messages are printed to the terminal before the text login appears: FATAL: Error inserting therm_pm72 (/lib/modules/2.6.20-9-powerpc64-smp/kernel/drivers/macintosh/therm_pm72.ko): No such device FATAL: Error inserting windfarm_pm112 (/lib/modules/2.6.20-9-powerpc64-smp/kernel/drivers/macintosh/windfarm_pm112.ko): No such device FATAL: Error inserting windfarm_pm81 (/lib/modules/2.6.20-9-powerpc64-smp/kernel/drivers/macintosh/windfarm_pm81.ko): No such device FATAL: Error inserting windfarm_pm91 (/lib/modules/2.6.20-9-powerpc64-smp/kernel/drivers/macintosh/windfarm_pm91.ko): No such device bcm43xx: Microcode bcm43xx_microcode5.fw not available or load failed. I have also attached an archive (logs.tar.gz) of a few logs from /var/log. ** Attachment added: "Log files after booting Feisty Herd 5 on iMac G5 Rev C" http://librarian.launchpad.net/7098521/logs.tar.gz -- iMac G5 will freeze after booting up https://launchpad.net/bugs/23445 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs