I've had one failure on an old 256MB Sandisk--after a few years it would corrupt files. Probably just worn out, as it got used quite a bit. We buy really chea

I've had one failure on an old 256MB Sandisk--after a few years it would corrupt files. Probably just worn out, as it got used quite a bit. We buy really cheap 1 and 2GB flash drives at work for promotional handouts. I'd say maybe 4-8 out of every 100 are DOA and need to be returned. Don't know if the good ones are holding up a year or two later. I recently received a new (Lexar?) drive and it would work fine until I got a few hundred MB on it, and then I started seeing corrupt files and other weird errors. I should try and RMA it.