i just bought battlefield 3 ans everytime i try to join a server punkbuster kicks me
RESTRICTION: Service Communication Failure: PnkBstrA.exe and gives me this error

update your punkbuster manually

Search your computer for "PB" aka (PunkBuster) but the best results will be searching: PB

• Locate File "PB Setup"
• Run the .exe (It will auto search for updates)
• "Add Game" (near the top right)
• Select Battlefield 3 (Path will auto-fill once BF3 is chosen)
• Click "Check for Updates"(3rd option from the top left)

If the problem still persists I would advise you to check PB's website

Specifically the Battlefield 3 section.
Google: PunkBuster/Home/Battlefield 3

Is PB's website down for anyone else?
Im having the same issue and went to download the latest version and I cant load their site.

yes punkbuster is down ;/

Worked for me