This also happened to me on Chase.com when trying to login, and also when myloops.net directed me to Paypal when I was trying to buy something from myloops.net. I kept clicking Log In on the Paypal popup and it didn't work. I had to use IE instead for both sites. Used to work fine in previous maxthon version before 4.9.3.1000. I am running Windows 7 Ultime SP1 64-bit