hi since time to time all applications hung that write to syslog, and i cannot ^C ^Z ^\ them ;( i cannot su to root and kill syslog-ng too. this has happened several times over several machines i've turned off dns lookups, since i guessed dns downtime affects this, but that did not help the problem, when it's arisen, gets solved by some 6 hours i guess the hung arises on high flood to syslog here's some strace too: socket(PF_UNIX, SOCK_DGRAM, 0) = 3 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 connect(3, {sin_family=AF_UNIX, path="/dev/log"}, 16) = -1 EPROTOTYPE (Protocol wrong type for socket) close(3) = 0 socket(PF_UNIX, SOCK_STREAM, 0) = 3 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 connect(3, {sin_family=AF_UNIX, path="/dev/log"}, 16 <HUNGS HERE> i'm using syslog-ng 1.4.17 os is linux, redhat based kernel varies, but mostly 2.4.18 (redhat patches) config options: options { long_hostnames(off); sync(0); use_dns (no); use_fqdn (no); }; source src { pipe("/proc/kmsg"); unix-stream("/dev/log"); internal(); }; -- glen