Ashserv locks up my system

I have been using Avast for several months without a complaint and have recommended it many times. A few days ago I followed the prompts from the tray icon to upgrade and it immediatly starting causing problems upon completion.

The problems are only when I am using resource intensive applications. At first I could not tell where they were coming from because the screen would freeze completely. Finally, I was able to get Ctrl>alt>delete to pull up the task list and it listed ashserv as failing to respond.

I have found that if I manage to kill ashserv I am able to use my heavy applications without problem, but I need to kill it completely. Simply turning virus protection to โ€˜offโ€™ does not do the trick, and simply closing ashserv removes the icon from my system tray but ashserv continues to run as a process.

If virus protection is turned off and the icon is removed, what is ashserv doing and why is it still running?