Windows XP Pro -- Weird Problem

Well this is going to be weird to explain, as it is a very weird thing that happens. Its not a major problem, something small that goes away when I restart my PC and only happens sometimes.

What happens is if I drag a file on the desktop to like an msn convo box to send the file, after i let go of the mouse button the icon like leaves a ‘stain’ on the monitor.

It only happens everynow and then, and like I said above when I restart my PC is goes away. Its just weird, iv taken some screenshots below to show you what I mean with how the icon ‘stains’.

Oh and the icon cant be selected or anything, its just a transparency skin of the icon? its really weird!!

[center]


[/center]