I just downloaded 1.9.9 and I'm getting a segfault for the following syslog-ng.conf: source s_external_syslog { udp(port(514)); }; destination d_re_mce_aggregator { program( "/bin/true" ); }; log { source(s_external_syslog); destination(d_re_mce_aggregator); }; I think that the problem is when programs exit unexpectedly and/or don't wait for input. I haven't run many more test cases to see exactly what's going on. The segfault drops two cores, 1MB and 256KB. If they would be helpful, please let me know and I can send them somewhere. -- Paul Krizak 5900 E. Ben White Blvd. MS 625 Advanced Micro Devices Austin, TX 78741 Linux/Unix Systems Engineering Phone: (512) 602-8775 Microprocessor Solutions Sector Cell: (512) 791-0686