Program Name in Active Window Title Bar Corrupted

[DaveC]

Greetings, this is my first post here. Lately, whenever I open Opera [my default browser] the blue title bar at the top of the screen always shows the same giberish [666:596] on the left side, regradless of the URL I'm visiting. Prior to last weekend the left side of the title bar displayed the visited URL as expected. This false title also appears on the bottom task bar with the Opera logo.

I tried removing & reinstalling Opera with no improvment. I didn't remove every vestige of Opera in the registry before reinstalling it; I'd prefer not to remove all this, if possible, to avoid deleting all my settings, bookmarks, etc. Any suggestions on how to remove [just] this garbage? Incidentally, my operating system is Windows XP home edition. TIA.

Dave