I just tried to put my 256MB cruzer mini into my comp and it didn't recognize it at all, and then I tried to put it into my sisters comp and it said it didn't install correctly..

a few times at school they have locks on the taskbar, so you can't use safetly remove, so I have just pulled it out.., could this be the reason?

I put it in, the light goes on, but nothing happends...

I ordered it in January, does sandisk give any warrunties?