I’m trying out Firebird, the new stripped-down version of Mozilla. So far, the performance is excellent. It has most of the good stuff I like in Mozilla, but not the pieces (e.g. the mail client) that I don’t use. Tabbed browsing doesn’t always work properly, though — sometimes tabs don’t close, and sometimes I lose the previous page list. And I miss the progress image showing when a page is loading. Still, not bad for a 0.6 release.