Yeah, that's a weird bug. I haven't been able to figure out why it happened, but I have the same problem. I always thought it was just a hardware thingholding the button just sent continuous "scroll down" signals a la the wheel. I'm thinking of submitting a bug report to Apple, it is rather frustrating, and wasn't a problem in 10.4.1.aussie_geek said:I have the 900 as well. The problems only popped up after Tiger was installed. I can configure all of the buttons except the down arrow button - this always brings up the Application switcher. The up arrow button does its job - jumps up the web page.
Anyone else had success programming this button for scrolling down a page???