Thanks for the info Pondus,
I just visited one of my friends sites that triggered it a few hours ago, and now it isn't.
I didn't even think to check the URL on urlvoid, thanks for reminding me to do that in these situations.
Just to be clear though my system wouldn't be compromised due to this incident since Avast "blocked" it? Sorry if it's a stupid question ( I'm sure it is )but I am not as knowledgeable about such things as I should be. I have been worried about connecting any of my jump drives to the system for fear of spreading anything.
Thanks!
Chris