Ya might try looking VERY closely at the white stuff...there's a bug
called the Mealy Bug, and it's white...I've had the same problem. You
should be able to see a small white bug shape...they kinda look like
About misting...you don't really need to mist a Jade plant. They are a
succulent, and don't need too much humidity. If the problem IS Mealy
bugs...a dose of Malathion (be careful, this stuff is nasty...) should
clear it up. Read the instructions on the bottle, for sure...