Hi, I'm running OS 9.22 on a G4 Dual 1.25 Ghz. I've just installed a fourth 512mb stick of RAM (I've now got 2 gig) and it's being recognised, but the OS is now using 579mb?!!!!! Before this installation the OS only took up about 75 mb. Can anyone help me out here? Thanks in advance, Andy Blaney. p.s. going to OS X isn't an option for me yet as certain pieces of software aren't compatible yet. Thanks.