On my little netbook, I run Google Chrome rather than IE6 as my web browser (IE6 is the default, and I don't really want to put IE7 on due to various reasons). Google Chrome is extremely fast on my netbook and i have a good browsing experience, it definitely seems much better than IE6.
I have started to notice that just running Chrome takes on average between 5-10% of my CPU time just for it to sit there. That's an awful lot of CPU time for having a browser window open (that is essentially doing nothing). I think it's time to change browser. I might give the new Safari Browser a go.