Camera / object movement

Hey, my game is approaching a completed stage so I decided to upgrade from 1.3.3 to 1.5 to get the most out of the update - having got past most of the major bugs in doing this I have encountered one that really puzzles me.

I use 'player->_btRigidBody->setLinearVelocity' to set the movement of my player, and as I encountered problems at high speed when parenting my camera to the player object, I used the same code with the camera - this worked fine for 1.3.3, however in 1.5 the camera moves ever so slightly faster than the physics objects, even though they use the exact same movement code (I'm talking the player moving at 0.9985% the speed of the camera). Any ideas what might be causing this?

Bullet 2.74... I had the same problem... you can see a noticeable delay...