[klem]

I see from other threads you still have the problem.

Have you tried thse simple tests? ......

Move all the .ini files in the 1C Soft Club IL-2 CoD folder to a temporary folder so new ones are generated. Close any other applications.
See if that fixes it. If so be very careful of any changes you make in Options.

If your mouse has any software assocated with it can you get a simple plain old PS2 mouse, uninstall the Logitech mouse software and try the PS2 mouse to see if its the Logitech software or settings that contain the problem.

Also consider if any other applications are controlling or trapping your mouse outputs (e.g. TrackIR can 'trap' key inputs for actions like 'Centre' so that only TIR uses them and they are not passed to any other application. Perhaps an application is trapping your mouseclicks?). Do you have anything else running that also 'programmes' the mouse in some way?

There has to be some reason why it works ok for most people but not for you. Have you compared PC/Hardware specs?