I am 280...and have no problems with 32h wheels on my commuter or my road bike. I learned to build wheels after I started breaking spokes on my rear wheel. Rebuild with good quality spokes, tension meter and sheldons instruction and have had no problems since. Rebuild the wheel with new spokes and proper tension.

for everyone out ther.....is there any correlation between disk brakes and spoke breakeage? It seams like the different focus of breaking power might have different impacts on spokes.... but that is a theory.