Hi all.I've posted several times, and mostly bragged about the many problems that a lot of simmers seem to experience with fs9. I've been wanting to give up many times, but the desire to fly, even if sitting in front of a monitor, is too strong.This is why I've desperately tried every possible tweak, inside and outside of the sim, to make things work. I still find many issues have not been resolved and probably never will be, but for the sake of flying I've just decided to get over most of them. And as time goes by, some freeware add-ons do help in gradually making the experience a bit more realistic.As an ActiveSky owner, I've noticed the last version (1.92) helps in reducing display of the horrible "mountain fog" effect, which I find visually unacceptable; I've stopped half-way through many of my flights for this very reason.That said, being a Radeon 9800Pro owner, I experience terrible flickering of mountains in the distant horizon, (regardless of ANY setting so far, be it driver or simulator related), and things get worse when clouds meet mountain ridges. At this point I'm distracted from flying by a diffused trembling as I look outside my cockpit (the basic of flying!), and my experience is over. I just can't get over this visual problem.I think that graphically speaking there is a set of "minimum acceptable visual flying conditions", under which I'm not personally capable of keeping the sim running. What are yours, if any?I wanted to share my experience, and I'm also curious to hear from people who have the same problem and find out whether it's limited to Radeon users or it's rather a common issue. Regarding the possibility of solving it, I'm quite skeptical at this point.happy flyingluca

I consider myself an amateur at this, but I have used FS2002 for two years I guess (time does fly as they say) and FS2004 since it came out.I would not run any add-ons at all till I was half way satisfied. I know myself that it was acceptable with a 1.47 MHz Atlon, and a GeForce 2 32 MB card and running 512 K of Ram. No go. I had to put in a Ti 4200 GeForce card, and 768K of Ram and a new 120 GHz Hard Drive running on the Ultra ATA 100 controller. Now I am happy. I have a tiny fog problem at times. But love the sim otherwise, and if that fog that looks like someking of a large pond is forming around the mountain tops, I fly instruments. Don't look out at it. It will soon go away due to the flight conditons changing anyway.