I just ran adaware SE on a vista machine and notice that it was checking folders like

"C:\Users\<user>\Local Settings\Application Data\Application
Data\Application Data\Application Data\Application Data\Application
Data\Application Data\Application Data\...."

This is a bug due to Vista's junctions. They're kind of like aliases. Apparently, MS moved some Application Data folders around and this was added so XP apps could find it. The problem is that Adaware is recursing through them and I guess stops when the path gets to big.

Just thought I'd let you know.