This is only beneficial for host=lapn
not needed for host=lapd that has similar speed

*** 7.1-RELEASE/src/sys/i386/isa/clock.c	Tue Nov 25 03:59:29 2008
--- new/src/sys/i386/isa/clock.c	Wed Jan 21 16:20:54 2009
***************
*** 468,477 ****
  	int sec, start_sec, timeout;
  
  	if (bootverbose)
! 	        printf("Calibrating clock(s) ... ");
  	if (!(rtcin(RTC_STATUSD) & RTCSD_PWR))
  		goto fail;
! 	timeout = 100000000;
  
  	/* Read the mc146818A seconds counter. */
  	for (;;) {
--- 468,478 ----
  	int sec, start_sec, timeout;
  
  	if (bootverbose)
! 	        printf("Calibrating (takes 3 mins on 133M Pentium) clock(s) ... ");
  	if (!(rtcin(RTC_STATUSD) & RTCSD_PWR))
  		goto fail;
! 	// timeout = 100000000;	// takes > 230 sec on host=lapn 133M Pentium.
! 	   timeout = 10000000;	// takes ~  23 sec on host=lapn 133M Pentium.
  
  	/* Read the mc146818A seconds counter. */
  	for (;;) {