SOLVED: Rebooting the machine appears to have removed the issue. I will update if the problem returns.
I\'m having an issue where Python2.6 hangs after
Python2.6
I tracked this problem down. It is trying to write to a socket that was held open by abrtd.
Restarting abrtd 'fixed' the issue. This is why the machine reboot worked. I haven't found the root cause of the issue though.