speed restriction 250 below 10 - doesn't work for me..

Hi !I've searched the forum, but I'm not 100% sure this hasn't been asked before:when climbing out, the aircraft doesn't hold the speed restriction of 250 below 10000 ft (using VNAV).Is this a known problem?Another one:I did a short circuit pattern at 6000ft. I have choosen a SID for this. The MCP had a restriction of 6000ft. The aircraft uses the speed shown on the cruise-page in the FMC (320 knots), not 250 knots - is this normal behaviour ?When I entered 250 as cruising speed in the FMC I worked fine.I think when these bugs (given that these are real bugs!) are fixed, this will become my favourite aircraft.Fine job PMDG!regards,Joerg