Hmm, this happens to me on my Handphone when I’m trying to
transfer files over to my phone. Are you using a data cable to
transfer files? A lot of PSP users transfers
files over to their PSP using the data cable
and does not have this problem. I think this problem lies with your
computer itself. You can try posting this question at the IT
support forum. But from my view, it does not lies with the files or
the PSP.