When Piper freezes Krell in mid-air, his left arm is stretched out and his right leg is up in the air. In the following scene, his arm is suddenly bent and his leg is down again even though he is still frozen.
Cole is in the cemetery and asks a woman leaving a funeral for a ride. She says "are you going to the wake?", and he says yes. A wake is always BEFORE a funeral.
Inspector Davidson tells Phoebe that Cole wasn't working on a case, big or small. He then tells her all Cole has done for months is file extensions. If Cole wasn't working on a case, he wouldn't have anything to file extensions on.