Frankly I have no idea! It might be the serial drivers for all I know. But I have been using the serial monitor before, and this is the first time I have encountered a problem like this. But if it is the serial drivers, is there something I can do about it?
Also I have to add: I just tried adding a LED to the serial output controlling the servos, and it appears it gives a slight blink every time the servos "connects"/"disconnects" in Windows. Could there be a software issue with the arduino?