Flightsim.com login is very slow and fails first time, succeeds on second attempt from alt logon screen. From that point on, it run okay, but is slower than normal. I notice that on first logon attempt, the password is not masked. I've noticed this problem since last Thursday.
Didn't Flightsim.com just switch from http: to https: ? Perhaps they haven't got the secure site configured just right as yet.
I noticed this problem awhile back when Trainsim.com switched to https: secure logon. It was cleared up in a few days.