I have the current iBook in my sig (366Mhz G3, 576MB RAM, 6GB HD) that's been happily running along with Panther 10.3.9 (albeit a bit sluggishly). What I was wondering was if I should upgrade to Tiger. I've heard that it has a lot of refinements when it comes to older hardware running more smoothly, so I figured that I'd ask here and see what people reccommend. Thanks.