I always lose in rebounds

Can anybody tell me, why do I every game lose in rebounds?
My team is GSW and i have Biedrins and Randolph in defense, pretty good rebounders, but always the opposite team grabs the rebound, not me.
Last game i lost 8-19 in rebounds and that continues in every game! Why? That isnt normal

P.S. I dont control them, i always control PG...

Even though the final stats don't always reflect an unreasonable ratio of offensive rebounds to defensive rebounds, the opposing CPU players in NBA Live 06 have a tendency to grab two or three offensive boards in a row that they probably shouldn't before eventually scoring which means your players won't be grabbing some defensive rebounds they probably should. Taking control of those players and crashing the boards yourself would probably help a bit though.

I had such an irritating playoff game where Portland C and F grabbed 3 to 4 offensive boards in a row just so that they can score. Darn, why can't my players do that?

Sometimes you can beat the CPU with the same trick but mostly it seems to be a means for the CPU to make the game more challenging (and often very frustrating in the process).