Running "sudo update-manager -c -d" to upgrade to gutsy, I get a message saying I need 908MB free in /usr and I need to free up 48MB.
df -h shows I have plenty of free disk space:
Filesystem Size Used Avail Use% Mounted on
/dev/.static/dev/hda2
9.9G 7.1G 2.4G 76% /
varrun 379M 248K 379M 1% /var/run
varlock 379M 4.0K 379M 1% /var/lock
procbususb 379M 160K 379M 1% /proc/bus/usb
udev 379M 160K 379M 1% /dev
devshm 395M 0 395M 0% /dev/shm
lrm 379M 34M 345M 9% /lib/modules/2.6.20-16-386/volatile
/dev/.static/dev/hda1
96M 50M 42M 55% /boot
/dev/.static/dev/hda6
43G 40G 1.6G 97% /data
/dev/.static/dev/hda5
20G 16G 3.7G 81% /home
cat /proc/mounts
rootfs / rootfs rw 0 0
none /sys sysfs rw,nosuid,
none /proc proc rw,nosuid,
udev /dev tmpfs rw 0 0
/dev/disk/
/dev/disk/
tmpfs /var/run tmpfs rw,nosuid,
tmpfs /var/lock tmpfs rw,nosuid,
tmpfs /lib/modules/
tmpfs /dev/shm tmpfs rw 0 0
devpts /dev/pts devpts rw 0 0
usbfs /dev/bus/usb/.usbfs usbfs rw 0 0
udev /proc/bus/usb tmpfs rw 0 0
usbfs /proc/bus/
fusectl /sys/fs/
tmpfs /var/run tmpfs rw,nosuid,
tmpfs /var/lock tmpfs rw,nosuid,
/dev/.static/
/dev/.static/
/dev/.static/
binfmt_misc /proc/sys/