Man, this is really bothersome...

I have XP Pro. Every once in a while, my default pointer will turn to into . It continues to function just like it did before, though. When I go into my Control Panel and into the mouse functions, my Windows Default scheme looks like this:


It has the pointer all the way down to Handwriting, which is a pen, and then continues to the end.

If I choose another scheme from the drop down menu and go right back to the default, though, it's fine. I can hit apply and the pointer will go back to normal.

Am I hitting a button combination or something to make the scheme change? It's a really bizarre problem to me. Hopefully someone can help.