Hi. I have a problem similar to the original poster. Although I set my scans not to review Time Machine, Avast did anyway (for ~200 hours! - I'll be fixing that!) and found 1,402 infections and was unable to scan 11,140 files. All of the infections were in Time Machine. I read here that a person can just delete TM, but I really don't want to do that, if that means losing all my backups. Is there a way to clean all the infections in one fell swoop? If not, if I have to put them in the Chest, what's the impact on storage on my hard drive? I'm using Avast Free on a 2009 Macbook Pro. Also, I'm a newbie to Avast, so please keep it simple! :-) Thanks!