Cpu Running 99/100% After Upgrade

Hi


I upgraded from bitdefender 2011 to Bitdefender 2012 Total Security yesterday. Since then my CPU has been running at 100% with vsserve.exe using 95-100% CPU. I cannot open programs such as Microsoft outlook and my PC is running very slow and hangs most of the time causing me to reboot. I am running wiindows XP with 2Gb RAM and 32bit system.


Can you please advise what steps to take to resolve this issue.


Thanks

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