After upgrading to Ubuntu 8.10, KeePassX 0.2.2 has been replaced by KeePassX 0.3.3.
KeePassX is a great passwod manager
I am accessing the same KeePass database which is stored on a USB stick via KeePass (Win XP), and via KeePassX (Ubuntu). So the migration of the KeePass database doesn’t seem to be a problem. At least, I don’t have any problems when accessing my KeePass database with both password managers (KeePass and KeePassX). They seem to be compatible.