Hi Shawini,
what have you changed? You was always able to play on our server.
Have you done a re-install of BF2 and thats why you have these PB issues now?
Can you download and install "pbsvc" from this site:
Even Balance, Inc. - PunkBuster Online Countermeasures and see if the test is okay.
In the logs I can see Punkbuster A warnings. Can you run "taskmanager" on your PC and check if the PnkBstrA service is running?
Is there a firewall active ( windows and/or virusscanner ) that is preventing PB communication?
We will help you to get on the server again