Reinstalled Kubuntu 9.10. Problem hasn't reappeared yet, even after using USB stick on a windows machine before.
Just in case it's useful, here's a diff of fstab+mtab before and after reinstallation: ======================= [~/kernel_hangs/diff]$ diff fstab_before fstab_after 3,5c3,5 < # Use 'vol_id --uuid' to print the universally unique identifier for a < # device; this may be used with UUID= as a more robust way to name devices < # that works even if disks are added and removed. See fstab(5). --- > # Use 'blkid -o value -s UUID' to print the universally unique identifier > # for a device; this may be used with UUID= as a more robust way to name > # devices that works even if disks are added and removed. See fstab(5). 10c10 < UUID=c33b4bf0-bf60-455e-bb7c-2c3c499582d3 / ext4 relatime,errors=remount-ro 0 1 --- > UUID=0a03bba2-be0c-4f77-a393-dd39ff775ea9 / ext4 > errors=remount-ro 0 1 12c12 < UUID=75eb4ad5-320f-4c6a-ae11-d0237997d55a /home ext4 relatime 0 2 --- > UUID=75eb4ad5-320f-4c6a-ae11-d0237997d55a /home ext4 defaults > 0 2 [~/kernel_hangs/diff]$ diff mtab_before mtab_after_nousb 1c1 < /dev/sda2 / ext4 rw,relatime,errors=remount-ro 0 0 --- > /dev/sda2 / ext4 rw,errors=remount-ro 0 0 13c13,14 < /dev/sda5 /home ext4 rw,relatime 0 0 --- > none /var/lib/ureadahead/debugfs debugfs rw 0 0 > /dev/sda5 /home ext4 rw 0 0 ======================= mtab after plugging in the USB stick: ======================= [~/kernel_hangs/diff]$ diff mtab_after_nousb mtab_after_usb 15a16 > /dev/sdb1 /media/disk vfat > rw,nosuid,nodev,uhelper=hal,uid=1000,utf8,shortname=mixed,flush 0 0 ======================= -- kernel lockup when plugging in USB stick https://bugs.launchpad.net/bugs/514485 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