I was mentioning an operating system mismatch. (Thinking flash drive, drop in) However, I was also referencing the fact that BC appears to have a standard up-to-date Cisco IBM Thinkpad which in my experience around the May 2008 would have been Vista Business 64 with an XP Pro overlay.
The timestamp would be part of the directory entry, created by the OS. It would not be part of the file.
You think that all 500 google files were dropped in, and none were there naturally?
That would be very odd.
Remember 100% of google files had the exact same issue, not just the incriminating one.