I installed PP3 yesterday and all appeared fine. I have one client computer (Vista SP2 desktop) which is backed up by my WHS every morning and the backup kicked in as usual this morning. The manufacturer's recovery partition (D:) on the client backed up fine but the C: partiton backup failed. I checked the backup status via the console and the error was "Backup server failed".
I then carried out a manual backup of the whole client computer and this went through fine and the problem this morning may be a one off. I just wondered if anyone else had encountered this issue with PP3?