OK Maybe it is just my school but does anyone else have staff who can trash thumb drives at will?

I am now the proud owner of a number of returned sticks because they are no longer being recognised by our PC's or laptops. Have a Verbatim Store N Go drive sitting in my home machine (Win 7 64) now and it is just flashing away. Explorer etc. can see it and allocate a drive letter but you can't access it. Got an XP machine at school to eventually bring it up in Disk Manager and it said the drive was good etc.

Any one else run into this and anyone found a solution that works? Several references to this on google but no solutions that seem to work.

Don't want to reformat etc as the drives contain stuff that the teachers need!