Windows 7 - issues with the left mouse button

Lately I seem to be having sensitivity issues with my mouse. The left button's ability to hold is off... some clicks act as rapid double clicks or just let go. I want to make sure this is a problem with the MOUSE and not Windows 7.

I've tried internal cleaning but the actual button is clipped together and the wheel prevents me from unclipping one side to clean inside. I've tried switching USB ports, no good.

Could be the mouse that's busted. I have a Raptor gaming mouse sat in the wardrobe because it started double clicking even though my computers set to one click, and it became unbearable to use Winamp with.

Don't you have another PC you could test it with to be sure?

It was the mouse. I bought a replacement Logitech fairly cheap as a replacement. I may try to "fix" it if I can get the internal button open, otherwise it's another USB cable to cut and save.