I don't know where this is coming from but hopefully some can help me
I never created a new partition either.
Using Vista x64.
I unplugged all USB, it still remained there.
For example, if you plug in a USB flash drive, the letter shows up - then it disappears
when you remove it. In this case it proves its not external of the laptop itself
and / or a strange glitch.
On a side note, anyone find it really annoying that when deleting a shortcut or folder via right click
inside the start menu, it closes itself? XP is not like that, it stays open.