Hi,
having big problems with the new thunderbird-3.1.1-1: After exiting a running thunderbird-3.1.1-1 and starting it again, nothing happens: No error message or something similar. Logging out or restart does not help. I had to downgrade thunderbird for getting it to run again.
Somebody has similar problems?
My situation may not match yours... But, I am running F11 and I've downloaded the TB 3.1.1-1 from the Mozilla site and am running it just fine. You didn't mention....did you try starting TB from the command line?