Comment 9 for bug 653134

The loadfont issue is fixable by editing the grub.cfg and commenting out these lines. http://ubuntuforums.org/showthread.php?t=1585673

The straight reboot that I am seeing is more difficult. I tried chrooting into the wubi and running update-grub (this used to work) but now gives:
Generating grub.cfg ...
/usr/sbin/grub-probe: error: cannot stat `/media/PRESARIO/ubuntu/disks/root.disk'.

If you try and run grub-install (to update the wubildr) in chroot, the lupin override doesn't work.

So, I think that this install is toast. The last test I could do is install a fresh maverick wubi and copy over my root.disk to see if the upgrade worked - but this is a time-consuming test and not sure I'll bother. I try some fresh upgrades instead.

Again, any tips in how to debug or fix the automatic reboot would be great.