Since getting the RC3, I've noticed files appearing in my download list that I haven't added. I remove them only for them to appear shortly after. At the moment, the files in the list have [XFLOODX] tags in the subject line but initially there were some files that looked like potentially infected files. I can pause these files and no more will be added but once I remove them, they appear again. The timing of it's insertion into the list appears random. Nothing like updating headers makes them always appear.
I've scanned my main hard disk and nothing seems to be infected.