Actually this problem occured once I installed the driver software for USB 2.0 card which was recently installed..during the installation process, I encountered a problem whereby the setup requires a file called "usbehci.sys" which was not detected in my PC..but that's not the problem, I found the file and completed the installation process. Now what happens after that is my Sony Flash Drive 2GB was detected as a removable disk with no storage size. But before the installation, the flash drive works just fine, i can still add any kinds of file, mp3's and other type of files, back then when I was still using USB 1.1 card in my PC. Now this problem really irritates me cause I got lots of personal files stored inside the flash drive, care to explain me how to fix this problem anyone. One more thing, before I installed the driver software for USB 2.0 card, I had to just pull out the flash drive without safely removing the hardware on the tray icon cause i was in a rush. Not so sure about the problem though. Need the ultimate solution for this problem PLEASEEE!!!!