With glibc-2.3.90-30.i686.rpm installed February 1 along with about 1,000 
other FC devel packages, including kernel-smp-2.6.15-1.1884_FC5smp and gcc-
4.1.0-0.18, this C program:

#include <unistd.h>
#include <stdio.h>

main()
{
  alarm(5);
  printf("alarm returned %d\n", alarm(0));
}

prints "alarmed return 0'.  It *should* print "alarm returned 5" or 
perhaps "alarm returned 4".