I'll have a character in a zero pose (or any other pose for that matter) and when I load a character injection, the right leg (just the right leg) will kick out of place and when I click anywhere again , the right leg will move back into place. It does not matter what character model it is. Poser 6-SR1, AMD Athlon 64 2800+, 512MB ram.

"Few are agreeable in conversation, because each thinks more of what he intends to say than that of what others are saying, and listens no more when he himself has a chance to speak." - Francois de la Rochefoucauld

Intel Core i7 920, 24GB RAM, GeForce GTX 1050 4GB video, 6TB HDD space
Poser 12: Inches (Poser(PC) user since 1 and the floppies/manual to prove it!)