There's a pretty weird bug on webkitgtk in f14:
SIGSEGV in FixedVMPoolAllocator from webkitgtk when starting surf, uzbl or luakit (WIP package)
It seems to happen to people with a x86_64 install and less than 2GB of
memory. I don't see it at all here with 4gb memory.
Anyone have thoughts on how we can fix this?