Hi, In regards to the h323 patch by 'Jing Min Zhao'. Using FC4 2.6.15-1.1833_fc4smp. I downloaded the rpm source installed it, patched it ,make modules;make modules_install,restarted the system. "I had to do a depmod after the system was restarted, modprobe could not find ip_nat_h323? Anyway I loaded the ip_nat_h323, and did a simple test using netmeeting. The linux system did a 'stack dump' and locked up. Unfortunately, I could not post to sourceforge/nath323 was down? Any suggestions appreciated, jason