new install cuases xp to not shut down properly

I just reinstalled xp and then a fresh install of avast. Now it wont shut down unless I go through task manager and then it stalls a while say shutting down forcefield and then hangs up. Id appreciate any ideas.

check this out . it’s not xp but may help…check your versions compared to the post

http://forum.avast.com/index.php?topic=94419.0