usleep           112 libproff/utils.c 			usleep (2000000);
usleep           128 libproff/utils.c 			usleep (2000000);
usleep           143 libproff/utils.c 			usleep (2000000);
usleep           169 libproff/utils.c 			usleep (2000000);
usleep            67 src/debug.c    			usleep(5 * 1000000);
usleep           938 src/xover.c    			usleep (5000); /* doesn't use SIGALRM */