Is there a way to see which program keeps changing the ShadowStorage Maxsize to unbounded?

It keeps filling up my hard drive and I have to reset it, but then it resets itself to unbounded. It was using 450 GB and I just lowered it to 100GB even though that's probably a little overkill. That particular drive is 600GB.

Is there any way to figure out which program is doing this so I can stop it?

Does something about Vista trigger this automatic reset?