I recently received the following comment and I thought it would be a good idea to go over some reasons why a web browser might get sluggish.
WTF, did you test this page? It is so freakin slow to scroll in FF3 – your layout sucks 100%, seriously.
There have been times that I’ve left Google Reader open all day at work in a tab and sometimes it will just end up making my browser so slow I have to relaunch it. Although it hasn’t happened that often with Firefox 3.