Mouse Click Problems

[Moij1]

Well, since a few days ago my mouse click hasn't been working properly. I have to hold down the mouse button for about half a second to open something, dragging windows sometimes lets them go, and i generally can't do anything mouse related properly.

I've played around with the settings on Control Panel\Mouse and that didn't seem to do anything, can anyone suggest anything?

Oh, and on a completely different topic; why can't i test my upload speed on SpeedTest.net?