Pros: - Works
Cons: - Verrrrryyyyy slow load!
Other Thoughts: While much better than IE, & while I LOVE the newer FF 4 versions with all the speed enhancements, version 22.214.171.124 of Firefox is verrrry slow loading. If you are loading on an older system, recommend you try some version of Opera instead.
May have to update Windows Installer, but you can use a much more recent version of Opera on older systems than you can of Firefox, IE, or Chrome.
Opera is the fastest on older systems. You may not be able to use the latest Opera, but try a few versions back of it on filehippo.
Opera is definitely the faster to use on older systems.