nope- no viruses on my pc...yea... the full screen option does not increase my fps.....it seems like my fps is capped at 20 when im flying around...20 on the ground, 20 in the air, VERY rarely i get 25fps-but just for a few seconds in view of little terrain.(vis range set to low)...even if i set all setting to LOW and switch RESOLUTION to low- i do not get increase in fps :(! i thought i could atleast play on worst graphics but get 30fps- i was wrong