I have been having the same problems airnav said I needed a better faster laptop
I had a Dell studio 1555
So I brought a Top of the range Dell XPS17 (702lx) with spec below
Intel i7-2630QM CPU 4 dual core with 2 threads each
16GB Ram
3GB nvidia GeForce GT555M 3D Video card
Windows 7 Ultimate x64
17inch 3D screen
and guess what I still have the same problems
I need to shut down airnav 10 to 15 times just to get aircraft to show up in 3D most of the time they come up in gray anyway. Then when its working the program freeze's
Yet they still say I needed to run the program on the basic mode setting, I brought the 3d version to show up in max mode
puddy
ps I cannot get a plane to show up on the olympic flame flight