The first time this happened was about a month ago, and I managed to google the answer. I promptly forget what the trick was, and today it happened again.

Well, I very much freaked out this time when I just couldn’t find the same web page with Google as I had before.

But I did find the fix. It turns out that Rocco had pressed the Control key while I was scrolling up a web page with the middle scroll button of my mighty mouse. That made the screen zoom in wildly.

All I needed to do was hold down the control key and scroll downwards with the scroll button.

I’m posting this partly as a reminder note to myself for next time Rocco does this trick, and for anyone else who has this happen to them.

Well, in the customer reviews (of all places) I found out how to fix the scroll button. Turns out, like a lot of computer problems, it’s a cleaning issue. You just need to get that tiny little ball clean again.

The customer review explained that you just dampen a cotton tip (q-tip) with alcohol and give it a clean, let it dry for about 5 minutes and bingo. It worked for me, and I didn’t have any alcohol handy so I dipped my cotton tip in the baby wipes container instead. But, try at your own risk.

After a quick Google I’ve discovered there’s a few different ways you can get your scroll button clean. See the MacOSXHints forum for more info.