Hey hey!

So for work I run two MacBook Pros -- sometimes in Windows under BootCamp and sometimes in OSX. When I transfer stuff from the Windows environment using a jump drive, I keep getting these files showing up when I read the drive in OSX:

At first I thought it might be a virus, so I downloaded and ran AVG on the Windows side, and that found nothing. So I downloaded Kaspersky for the Mac and scanned the jump drive, and again, nothing. I did erase the jump drive a couple times with Disk Utility on the Mac, but the files show up again when I've used the stick in Windows -- so it's acting very virus-y in that it seems to replicate, but neither anti-virus package flagged the files ...

So does anybody have any idea what these files are for and if they're something I should worry about?

Thanks =)