Discovered a long time ago that an FMC software glich caused it to ignore the speed restriction enterred IF THE ACCOMPANYING WAYPOINT ALTITUDE RESTRICTION IS ACHIEVED. To forestall this, banana head is correct; just enter a speed/altitude( an intelligent estimate ) restriction in the VNAV climb page. I believe Boeing/Collins/Honeywell are STILL working on it. Reported it years ago to my company techies but they laughed me off, I believe they were not able to simulate in the Sim!!! I know Boeing was also alerted but with such LOW TECH complaints coming from an Oriental pilot, THEY JUST IGNORED IT!!!