FS9 Reloads without cause

I am new to the Avsim Forums, but I have been to the site many times, and it is a great one. My problem is, in FS9, while flying in Alaska, all of a sudden I have a reload. That includes, scenery, weather, terrain, traffic, and weather, as well as the time. It will either go forward in time or go back, no rhyem or reason. At first I thought maybe it was a time zone change, but Alaska is all in one zone, and, it does NOT happen in the lower 48 states. I have tested many things to try and figure it out, a download of scenery and such, but I have not done any downloads for Alaska. I have heard that others have had this type of problem as well, in Alaska and other parts of the world. Is their a glitch in the sim?, anyone else have this problem? Thanks.Larry KSEA