If I use Ctrl+C to copy something to clipboard there is about 25% chance I get this error message dialog:
Title: Barca 2
Message: Cannot open clipboard.
The text is going to the clipboard.
The message is extremely annoying, working on 100 mails results in 25 messages that have to be clicked away.
Barca 2.0 had this problem, but it occured once a day, not every few emails.