I have the same problem, i will target a mob, send in both pets, sometimes one of the pets will wander of and attack another mob. I will quickly spam the attack macro and the 2nd pet will switch to the main characters mob. The really weird thing is that after that mob has been killed, that the 2nd pet will go towards the mob it had originally targeted (but not hit or come close enough to grab agro) . I'm using keyclone with multibox btw