I've had this mouse for about 5 months now and it has been awesome until about a week ago. Now for some reason when I try to drag a file to anothe folder to copy the file, instead of dragging it the file will open. Or I will try to select multiple files by left clicking and highlighting the files I want to drag and it either will not work, it will open the first file I highlighted, or it will only highlight the first file. I have tried uninstalling the driver within Device Manager (I can't rollback the driver), I have tried switching the wireless reciever to a different USB port, I have tried modify>repair for the Razor mouse Synapse program, and I have also tried just uninstalling and reinstalling the Razer Synapse program, I have also tried switching out the battery in the wireless mouse and nothing seems to work. Does anyone know what i can do, or what the problem may be? Oh and I have also had a problem with the mouse sometimes becoming unresponsive, or very laggy. I am only about 3-4 feet from my PC and the reciever is plugged into a USB 2.0 port, I have tried 3.0 but get the same thing happening. I should also mention this seems to have started after I upgraded my PC case to a Lian Li 011 dynamic. I don't know why that would change things but it seems weird that this all started happening after upgrading my case.