Due to the combination of my internet and my computer, searching for addons is tedious if it's something that is hard to find.
Also, for some reason, Firefox takes literally twice as long to start up as Opera 10 does. Same with Internet Explorer. I'd use Chrome because it is also a neat browser, but it isn't compatible with Windows XP SP1.
SP1? Come on, SP2 isn't
that bad. The one you should really avoid is SP3.
And there's not even any searching for add-ons, it's simply "hey these are the ones everyone uses you can download them if you want", they are all right there for you, one-click download, one-click install.
And I have no problems with firefox taking a long time start-up. That might be because I have 4gb of RAM, I don't know.