Mozy on Mac does not work :-(

I've been trying out Mozy as a backup service for my Mac. Granted it's beta, but for me it does not work. When I change files or add ne files to a folder, those changes are not detected by Mozy ( It tells me "no files changes" when I do a backup. Sigh. Either I'm doing something wrong or this is a bug. Their FAQ says it depends on Spotlight, but after checking Spotlight does detect the new files. I guess I either need to way for a final Mozy version, or I'll look for another service. Sad, because Mozy looked good and was cheap.