Now 4.2 is out I may be ready to load up Tiger on the Powerbook. The thing is, how much more RAM do I go for? I've got 768MB already having got my paws on a free 256 module soon after purchasing. A new 512 module from crucial is about £45 and a new 1GB stick is £105. I could probs sell the 256 module for about £15 so it's £90 vs £30. Its a big difference, but I am finding the PB a little slow when it has several apps open. Mix it with Tiger and I'm concerned that the short hop to 1GB may not produce much of a result. I'm not too keen on splashing out the £100 but it could be well spent. Whaddya reckon? Will 1GB suffice for now?