I have 2 flash drives that I use between my home PC (98/SE) & a machine at work (I believe XP). For some time all was well, then all of a sudden first on 1 then later on the other, I can no longer save anything to them with either machine. I just read a post about a similar problem and have found out about "stopping" the device before unplugging it - I don't have that green arrow at the bottom on either computer - would they be hidden somehow and how to get them to show? Anyway, now that I know that, is there any way I can fix the problem? I can read and copy from them, so if I save all the files to my desktop, can I then reformat them or something to regain the save functionality? Thanks so much!