Two sides of the coin. If DPS are pulling in front of you once in a blue moon, whatever. It happens. If they do it once no biggie. If they keep doing it ask them to stop. If they dont, they can enjoy the floor.

However, if this situation happens to you on a regular basis, then you might need to consider a look in the mirror. Are you are just moving excessively slowly? Blowing your entire CD suite for a lame set of trash mobs then waiting for them before pulling?

If DPS seem to ALWAYS be pulling then you are probably just being really, really slow. If it happens once in a blue moon, then you are fine and just got a randomly impatient player. Just make sure you arent the one holding the group up.