It looks to me like a previous spyware scan found these files and removed them and you have since forgotten about them, but they never removed the registry keys.
I will agree with Striek on this one.. this is why I nowmaly recommend running 2 Anti-spyware progs.. some time is is simply because the writers dont consider the some files to be a hi risk..some just dont know about the extras.. ..it happens
Also it is a good idea to run some scanners in safemode..