While performing an Ad-Aware scan, Ad-Aware may freeze while scanning the "Shared Dlls" area of the registry.
Some users have reported that performing a checkdisk and repairing bad clusters has resolved the issue, however, it is still causing issues for some users, therefore it is still under investigation.
If you are encountering this problem, please run a disk defrag and a full 5 stage CHKDSK, making sure to repair any/all bad clusters.
If you are still encountering the problem, please post a support request.