Comment 11 for bug 653134

update-grub causes the same problem (computer reboots).

Running "grub-install /dev/sda2" is successful and updates wubildr, but doesn't help.

I noticed in fresh installs of maverick from bug 600578 there is a new wubildr-bootstrap.cfg file which is not present in /ubuntu/winboot after the upgrade. Could this have something to do with it?