I notice that when logging in with e.g. Facebook button, the time for the facebook popup window can sometimes take up to 2 minutes before displaying. On average it takes several seconds (it feels always to long

Because during that waiting time you can't see any change in the cursor you start to doubt if you pressed the facebook button > pressing it again and again... with the result that several windows pop open...
Is it possible to change the cursor or disbale the pressed button to indicate that you actually pressed the button and now just have to wait?