I've had this issue quite alot since I've started using KC. Wasn't sure what causes it, doesn't happen all the time or during major battles, but still more times than I care to deal with. Thank you for this tip here, for some reason, I just never tried this. What sucks, to it hasn't happened in a while, is when some, not all of the windows decides to freeze up during an instance/bg, and drop connection from the server while the others are still fighting or logged in. I think this is more of a hardware/network problem and not KC.