Windows Left arrow key stuck down in Vista? Really random problem...

Ok, i have a really strange, random problem and I was hoping somebody may be able to help.
It's happened about 3 or 4 times in the last 2 months, but occasionally, by computer decides that the left arrow key needs to be pressed and held down indefinately until i manage to log off or shut down...
It is NOT a keyboard issue - when it's happened i've unplugged my keyboard and tried a different one. I havent even been anywhere near the arrow key when it's happened.
It clearly not a regular occurance, but it is happening...

I've googled to no avail (found one other mention of it here, so i know i'm not alone, but i have no idea what's causing it!

Anyone able to shed any light?!

 

Run something as admin to get the UAC prompt. If at that dialog box, the Left key is being pressed, then it your USB port/controller, or keyboard..
If the problem doesn't occur, it could be malware installed on your computer that does that.

 

I can't do that, as it's not a regular thing - it just happens at wierd times - and very infrequently!
Oh, and I run everything as admin...

 

__

 

Sounds like a broken plug.

"Oh, and I run everything as admin..."
Support is over from me. :|

 

What i mean is that my account is an administrator account - i'm not logged in to the Administrator account...
And i don't think it can be a broken plug as it did it without the keyboard connected :s

 

Anyone else able to shed any light?

 

USB controller broken... try uninstalling it, in Device Manager, and restart your computer.
If it still occurs, re-install Windows (DO NOT INSTALL YOUR PROGRAMS, just update Windows, and live with IE for some time until you can confirm that your comp is O.K.).... I am NOT saying that it is Windows fault, but I say that it could be a malware program playing tricks on you. Else, it would seam your mobo USB is broken. Disable the motherboard USB, and get a USB card.

 

Maybe Windows being Windows? These things happen.

 

Hasn't happened since the original post, so i'm inclined to agree with you freedom...