I'm looking for a profiler for linux/gcc. Is there anything useful other than gprof?

Yes there is.. Excellent tool called OProfile .
And you should check for another extremely useful tool: Valgrind .

Look from SF and Freshmeat.net for some "pretty" GUIs for those too..

Thanks!

I know about Valgrind and use it regularly to check for memory leaks and profiling.
I will check out OProfile for sure...

I am looking for a gprof alternative too because gprof can not handle threads (or at least I was totaly unable to get threads profiled).
Looking through the oprofile page, I was unable if oprofile was any better.
So question: Can I profile threads with oprofile?
Thanks!!!

OProfile profiles _everything_ from your kernel to every process you're running (and every thread you're running). Only downside is that it requires kernel support (found from the vanilla kernel).