I foud this.
After last nights EA server outage on PS3 and PC, EA have found the issue and put a fix in place and brought the servers back online. This means that both PS3 and PC players can return back to playing Bad Company 2.

We are aware of a number of remaining disconnect issues on PC and we have released the “R5” server to hosts yesterday to address some of the disconnects. We are continuing to work on the remaining disconnect issues to have a solution as fast as possible as well as looking into reports of other issues raised on the forums for consoles: http://forums.electronicarts.co.uk/batt ... pany-2-ng/ and PC: http://forums.electronicarts.co.uk/batt ... pany-2-pc/

Good for EA, they're on the case. Just followed the link to the forum and it seems that the "PB INIT" kicks were (are?) a server side problem.
I played for a couple of hours earlier on three different servers with no problems. Hope it's the same this evening .