QUOTE(jojong @ Dec 23 2008, 01:53 PM)

It maybe the aawservice that's preventing you from deleting the folder. Go to Task Manager and end this service. It should let you delete the folder.
I found a fix what you do is download the 2008. Start yur task manager and select the services tab look for aawservice it'll say starting, click that option then select the service option at the bottom right (using vista btw!)
Then select ad aware service option from the list right click - properties youll get a pop up screen in the middle theres start up option and its set to automatic, change that to disabled. Restart your computer then install the 2008 version it will delete the old one for you! Only took me hours to figure it, it was very annoying!
Enjoy