there are a few things you could try, First take out the arms, the holes become blocked so they need to be washed. Clean the food filter while your at it. The temperature setting may be too low, it should be above 50C. Make sure the dishwasher is connected to a cold water tap (otherwise the detergent will disolve too early for it to work properly). And finally, try a longer wash cycle. =)
Kat
March 2010