Hi I have a G4 1.5GHz PowerBook 15" laptop and love it. I have upgraded the RAM to 1.5GB. A few days ago I decided to upgrade it to Leopard, and let it do all the updates etc. I could not help but notice a slowness in performance. I was aware that Leopard is slower than Tiger, but by this much? Before I list my tests, I was wondering whether there are any tweaking tools that help speed up this? For example, is it work automatic the launch of my key apps (i can go and make coffee while I power up)? Any third party tweaking tools? My basic tests are listed below, and I was just wondering whether this is the norm (I will then return to Tiger) or can i tweak it by adding more RAM? Start up took 2 minutes from pressing the ON button. Althought the OS was on after 90 seconds, that last 30 were taken up by Leopard updating the bar at the top with Adobe, wifi, blutooth etc. Word 2008 took 40 seconds when I launched it first time before it could let me type text. Closing it and re-launching Word took 10 seconds. Entourage took over 2 and a half minutes. Closing and re-launching took 1 minute. I can go on, but will do not want to bore you.