After checking with pidgin, which I use for other accounts, that my credentials were still working I found a post in the Ubuntu Forums that gave me a good solution:

$ sudo aptitude remove telepathy-butterfly
– Make sure you have telepathy-haze installed, if not
$ sudo aptitude install telepathy-haze
– Delete the accounts and recreate them with the new plugin

I’m not sure why this happened, but at least it’s working again.
Hope this helps someone else out there.

I decided to install the new and shiny Ubuntu 10.04 “Lucid Lynx”, but there is no way I want to affect my main partitions!! Why should I this is Linux after all, it can boot from a secondary partition I can even put the bootloader at the beginning of the partition to make it totally independent!! Having done that already with Backtrack 4, Ubuntu 9.10 (karmic) and CentOS 5.x it should be as easy as 1 – 2 – 3 (Or simple as… got Jackson 5 ringing in my ear right now).

So the solution I had in mind was just to add a new partition with parted, install there and add the following lines to the /etc/grub.conf in my Fedora partition:

title Ubuntu 9.10 (Karmic)
rootnoverify (hd0,6)
chainloader +1

The problem is that Ubuntu 10.04 ships with grub-2 (technically speaking 1.98) and it just doesn’t work the same way. After a couple of re-installs and hours later I came out with this blog with a really detailed review of the distribution and with the solution I needed:

title Ubuntu 10.04 (Lucid Lynx)
root (hd0,4)
kernel /boot/grub/core.img
savedefault
boot

Just to make sure your a attacking the right error, this is was I was getting: Error 13 invalid or unsupported executable format

Enjoy