I've got windows XP pro. Lately, I'm having a serious mouse problem. After some time of using the computer, I would open some program: IE, media player, or anything else and the mouse would start sliding to the left, the left mouse button is always in 'onClick' mode and A web page I'm browsing or word document I'm using while the mouse is behaving like that increases in size until the font is the largest and there is no way to control it. Now, I have Logitech cordless MX600 laser mouse, but I'm pretty sure that the hardware mouse is not causing this problem. I had a thought that it might be video card drivers - I've updated my drivers but it's no good and the problem still occurs. Maybe I'm using too much memory - I don't know how do I check this out to be sure and what should I do if it's indeed what causing the problem. If you know what else can cause this problem and how to solve it, I'd be glad to know. Thanks in advance!!