[Freeswitch-dev] newbie build problem: libapr configure hangs on pthreads detection

I'm new to FreeSWITCH and am in the process of trying to build the system on Ubunto 11.10. I grabbed the source using git. The problem I ran into is that configure would hang when detecting "CFLAGS needed for pthreads" in libs/apr. When I did a ps after trying a couple of times, I discovered a bunch of defunct conftest processes. I added a pthread_join() to the conftest code used for the detection and the configure was able to complete. My question is whether this behavior indicates an incompatibility or missing library on my system. Should I be worried about future issues on this system? Thanks, -Christian