Ok, I've written about how I managed to get resumable vnc sessions working in feisty before, now I've upgraded to Gutsy Gibbon and ofcourse it stopped working.
Apparently the fonts have moved on disc, so I needed to change my Xvnc.conf file to reflect this. The font parameter should look like this:
/usr/share/fonts/X11/misc
source:
http://ubuntuforums.org/showthread.php?t=122402&page=37
