swap won't mount after upgrade (UUID wrong)

Hi,

After upgrading my system (Sony VAIO laptop) all the way from Ubuntu 4.10 to 6.10, I suddenly found my swap space had gone. I had both a swap partition and a swap file.

I managed to fix the problem myself by using the help in:

https://answers.launchpad.net/ubuntu/+ticket/2488
(great and very friendly help BTW!)

So I don't have a current problem, but since it happened during automatic upgrade, and swapspace is IMHO a rather important part of your system, I thought it would be prudent to let you know about it.

I managed to fix the swap file myself by running mkswap on it. I also ran mkswap on my previous swap partion, and I could use that as swap ('swapon /dev/hda5') but it not did appear as swap space after reboot.

After running the 'magic' command from '2488' to get the UUID, I put that in my fstab (which had a different UUID for this partition). then a 'swapon -a' worked.