Sony DSC-S500 I/O Device Error

[Sonyman]

Hello, i am new here and i was wondering if you could help me.

I recently purchased a Sony DSC-S500 camera. I have heard good reviews about it, so i thought would buy it. When i got home, i tried uplaoding some pictures onto my computer. I plugged it in, it automatically installed the drivers (because its Windows XP) then i double clicked "my computer" and double clicked on the drive "I:\" (My camera drive). I immediately received the following error.

I:\ is not accessible. 

The request could be performed because of an I/O device Error.

Can someone please help me? i really like the camera, except for this error.

I am running Windows XP Home edition, i have the latest drivers, and my system is up to date.

I tried uninstalling the driver, and re-installing but didnt work, i tried reformatting the camera to factory standards ALONG with the card, no dice.

One thing i do find interesting tho, is that when i restarted after uninstalling the driver, i tried it, and it worked, on another account on my computer, but when i switched to my own user, it did not. i tried it again on the other user, and no go. it seems to disable itself on user switch.