Can't find the cruzer when i plug it in (by 3 users)

I love this little gadget. When I would plug it in I could access it by going into " My Computer " where it would appear as F drive.

Now recently when I plug it in it doesn't appear. I uninstalled it and plugged it in. Windows found the software as sandisk mini cruzer and then as a disk drive.

When I checked in my folder it wasn't there. I found it in the device manager in disk drive along with my hard drive but also showed up in the usb hub.

Hope you can help.

Stinger