Leopard, pre 10.5.2, was indeed a mess. Lots of performance problems. I don't think it was until 10.5.5 that it caught up to Tiger in terms of performance and s

Leopard, pre 10.5.2, was indeed a mess. Lots of performance problems. I don't think it was until 10.5.5 that it caught up to Tiger in terms of performance and stability. 10.6.0 is great out of the box.