[Freeswitch-users] Two or more simultaneous calls not working

Hello, I wrote an application using FreeSWITCH version 1.0.3, with mod_python and a 64 bit box on Red Hat. The app works fine when one person dials in, but when a second person dials in, the first call stops and waits until the second call is finished. It's really strange - if the first call is right in the middle of playing a prompt, it will just stop, and there will be dead air. As soon as the 2nd call hangs up, the prompt for the first call starts playing right where it left off. I previously had FreeSWITCH installed on a 32 bit CentOS box, and this was not happening. Does anybody have any idea what the cause of this could be? Thanks!