Comment 1 for bug 302943

For those who it will happen and don't know how to go back on th right partition, you will have to from grub) pres the e button on the line you wish to boot from, and e again to edit each other line so it points to where your installation is, exemple: (hd0,2) instead of ()ubuntu/...

I also tried to upgrade to grub 2 and it detected correctly my partitions, bu I still don't know what will happen afte a kernel upgrade.

For you question about updates, there was no since 2008 summer and I got LVPM after that with the same issue you have, so I don't think it was solved