BTW, here's a patch you may want to try. It's just a wild guess though...
Dean Index: main/http_main.c =================================================================== RCS file: /home/cvs/apache-1.3/src/main/http_main.c,v retrieving revision 1.430 diff -u -r1.430 http_main.c --- http_main.c 1999/04/20 19:15:39 1.430 +++ http_main.c 1999/04/21 00:07:43 @@ -3601,6 +3601,7 @@ #endif #endif signal(SIGALRM, alrm_handler); + signal(SIGUSR2, alrm_handler); #ifdef OS2 /* Stop Ctrl-C/Ctrl-Break signals going to child processes */ @@ -4105,7 +4106,7 @@ else if (ps->last_rtime + ss->timeout_len < now) { /* no progress, and the timeout length has been exceeded */ ss->timeout_len = 0; - kill(ps->pid, SIGALRM); + kill(ps->pid, SIGUSR2); } } #endif