Also a patch has already been released: Thanks Onji for the info!

The RC2 contains the following fixes:

Front end:
Fixes server browser crashes. Server browser more resilient against corrupt online service data, and better support for large number of servers.
Several server browser ping issues resolved.

Windows XP stability:
Fixed crash on windows XP at end of round, exit game and display mode changes and.
Proper window style / mouse confinement when starting game maximized on XP .

Options dialog:
Mouse sensitivity setting gives more effect.
Mouse sensitivity loaded on game startup.

The update to RC2 will be 8.4Mb

When you next start BFBC2 you should get this message (Steam users can update through Steam).