Avast AV Error!

Greetings fellow Linux disciples,
Recently while setting up a dualboot computer with xp pro/ubuntu studio 8.04, I decided to install Avast AV try give it a whirl. After installation however Avast generated an error when I clicked the Avast icon from the accessories menu; An error occurred in Avast engine: VPS file was destroyed.
So I uninstalled it then reinstalled, but still get the same error, any help?
TIA

Mr. Wasabi

 

What's the output of

Code:

updatedb
locate vps

?
What happens when you run Avast as root?