Hello, I have noticed that with Composite module enabled, and running a few apps and rhythmbox, after twenty or so minutes, if I raise rhthmbox, it's window has become completely white and unresponsive and I have to close it. If Composite module is not enabled and using DropShadow, this doesn't happen. I'm using task-enlightenment from the repos, installed on top of lxde-mini. Is anyone experiencing anything like this? How to solve this? thanks