If a URL has a hostname which has no name resolution the browser hangs and eventually crashes. tcpdump can see it make the DNS query and get back a reply showing failure. strace shows the browser doing continues brk's until it exhausts VM and crashes. Its doing the same thing on Solaris. This just started on the nightlys over the last day or so. Its easier to test this with keyword search off, so it actually does a name lookup.

dup *** This bug has been marked as a duplicate of 81273 ***

reporter: in the future please include a build id when reporting bugs about mozilla. vrfy dupe. the fix should be in tomorrow's build.