I've been running 10.5.2 with Leopard for a few days and my browsing speed has become noticeably slower than it was with my cranky old PC!. This is very disappointing as I really expected the Mac's higher spec would improve not diminish my browsing experience. I know there's not much I can do about the speed of my local exchange (I have a DSL connection) but is there any way to make Firefox and/or Safari run faster on my system?