strange collisions

Hello
I have made an car racing game.
i have placed dynamic boxes, so when i bounce against them with the car.
But often the boxes fly away thousand miles before i collide with them and with an incredable speed.
I think this is because of publisherbut i´m not sure.
Since i have publisher it often happens.
In 2.23 i have only seen this bug only 1 or 2 times but in publisher it happens to much…
Thx for all answers!!!

hmmm… theres loads of things that might cause that kind of effect. can you describe in more detail wht your games doin?

–EDIT–

Or better yet give us a copy so we can look at it 4 u