Hello. There is definitely something going on here. I have almost never had a virus problem, however, this thing is real, and it is quite peculiar that it affects the functions most important for copying. The fact that it affects more than one form of copying makes it seem quite sophisticated. My computer is nearly 4 years old and does not have but 10.4 on it. Its G4 800Mhz processor sometimes gets stuck with a blue screen during boot if I go to more recent versions of 10.4, so it is possible that I do not have some of the more recent Apple fixes or security updates that cover this problem. It is stable with 10.4, so I keep it there. Believe me, I am a big supporter of Apple. I just bought the 17" macbook pro, so now I am debating if I should move my music library there and take a chance. Since my music library is actually not on the root drive of my old computer but on a second add-on drive, I may just connect that add on drive to my new computer and point itunes to it and hold my breath. If I do this I will report back.