I have a feeling that this is not a game problem but a driver/3rd party app thing. Try to turn off sounds, that should limit possible sources of problems, and if that will not help then turn off all other programs which can be turned off (starting from catalyst control center or nvidia control panel to a long forgotten util running on systray. Try to focus on anything dealing with graphics).

What do you mean? What's a LOG.ist?
My computer is empty except IL-2. And the only 3rd party add on I have is only the Chinese voice. It just a few wave files replaced in the sample/speech folder.

log.ist is file with debug info which you can find in root folder of IL2.
But is need have activate in conf.ini
LOG=1
But first check things which wrote LesniHU about settings graphic card.

mag

Thanks sir, but what do you mean by "wrote LesniHU about settings graphic card".

So what patch do i need to have before downloading 4.11? 4.10m?

4.10 or 4.101

read:

Okay, got the patch and the hotfix (Sorry I "took an arrow in the knee" for a few months:)), it pretty sweet guys. I'm still getting CTD though in some situations, not sure what the cause is or how to replicate it. Anyone else experiencing this?

What is 6dof?

6 degrees of freedom. In other words you can now shift left-right and forward-back in the cockpit.