I have the same problem. I also get computer lockups once in a while too; usually at the AH splash screen when I first start up AH. I don't have any other kinds of problems. I get very good frame rates, no stutters, warping, any of that. Just hangs and lots of discos. I've just been putting up with this but I got three discos last night and two on Sunday night (didn't fly Monday). This is really discouraging.
I am about two months back to AH after about a two year layoff. Since the version I had was so old, I just uninstalled it and downloaded the latest full version which was 2.09.. I have since upgraded twice (Patch 2). Though I've been seeing discos regularly since my return, it does seem to be worse with this latest patch. It's so bad now that I won't even consider flying a perked plane because of my fear of being booted. I have been with this game since the beginning and have never seen more than five discos in six months. Now, I'll get that many in a week.
I am very methodical about my system and my network setup. I have a fairly standard setup: Roadrunner cable broadband, Linksys router with wireless ports for my wife's and daugher's laptops plus wired ports for my game computer and another one my wife uses for web browsing. We run the Linksys hardware firewall and software firewall software, virus checkers, etc. on each of the computers. When I first started getting discos, I turned off my firewall, virus, etc. software but that did not seem to make any difference. I then shelled out $7 for PC Magazine's TaskPower2 software that kills off every non-essential process on your computer. I will run that just before kicking off AH but I can't say I see any difference there either.
I've been reluctant to post anything about this problem here because I've read other similar threads and the problems always seem to be internet problems. I guess I need to take this up with my ISP but I don't even know what to say to them. It's hard to imagine that they would even talk to me about it.
I do know this doesn't happen to everyone. Two of my squad mates live in my area and use the same provider, same router type, etc. and they do not have these problems.
I don't know what to do about this.