OK - the full screen really seems to work now. When starting the game it first shows the reticle "transparent" with the desktop in the background but then switches to real full screen. The Anti Aliasing also works now - great! When pressing escape to switch to the C# launcher / options GUI it works in a much snappier way, and when going back to the 3D engine there is no minimize-maximize popping feeling like before. Just a quick blink and back in the game...
When I first started I had an error that I had in the second patch, namely that the buildings where not displayed at all in the Dover suburbs (having buildings set to high), and only about half of them in the city centre / harbor. I just saw the naked ground textures with the basements

I quit and deleted all files in
C:\Users\<username>\Documents\1C SoftClub\il-2 sturmovik cliffs of dover\cache
And then it worked fine. FPS is maybe a bit better but the stuttering is definitely gone now which is the most important thing! And that is on my four year old rig...
And I really like the new map with a lot more clear airfield markers and with names of the locations on map! Good!
A last note that I don't know if I had before. When loading the quick mission over Dover in a me 109 I got the message:
Long Bridge: wrong width (3)
Don't know if that is interesting to you
Finally the Force Feedback feels a bit better - maybe just wishful thinking, but it takes like 20 seconds into the mission until the self centering "kicks in". The buffeting works from start though (on my G940). The FF effects really adds a lot to the game!
Have a nice vacation!
Specs:
Core 2 Duo E8400 @ 3.3
Nvidia GTX275 (270.61 drivers)
6 Gb DDR2
Windows 7 x64
G940 and TrackIR 4