I've been switching from NC 4.76 to Galeon 0.11.1 for about a month now. Galeon is pretty sweet, and the bookmarks and toolbars interface is much nicer and easy to use. One word: less bloat.

Some things that break are some https pages and some refreshes when reading local directories. Otherwise (although slower than NC), it is still pretty comfortable to use. My Ximian-configured 400Mhz box takes 10 open windows with Java and stuff without much sweat, which is not the case for Mozilla. (to install Java, you need to make Java running for mozilla first).