Phoronix News: Mozilla Firefox 3.0 Alpha 4 Available
I can't get it to compile with GCC 4.1.2 on Gentoo. I was able to compile 3.0 alpha2 just fine with the same ebuild.
First GCC complains about some deprecated syntax that it only accepts with the -fpermissive flag on. So I added -fpermissive and on my second try got another (apparently unrelated - in a different file) error about something being "not declared in this scope"!