Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
OK, useful information. I went to this thread and used the "DisablePreload=1" tweak and it worked. Not sure what that means though.
LouP
I could be mistaken, but I believe DisablePreload stops the sim from preloading the files for your default flight when you first start FSX.