Too often problem really is in the users computer and not in the game... regardless of the game.
Anyway.. what comes to WWIIOL, I haven't had any bigger problem with it than most of the other games.
Sometimes it might crash.. like about once or twice a week, what I remember from last week of playing it.
Meanwhile other games have crashed about as much.
It's really gone long way from the early days CTD's.
CTD bugs seem to have now shifted to game mechanics; units, new graphics..
Better than CTD's though.
As a ground pounder, I don't have too much to complain, theres no bigger show stoppers.
However the air is messed up ever since the plane DM and FM audits.
For example;
With DM It's funny how DB7/Havoc can soak up lots of hits in their wings (fuselage is like paper compared to titanium wings)
With FM Spitfire seems to be from an another dimension with the other planes - simply is able to do something which would be impossible. (and of course longitudal stability on some planes is horribly wrong, like for example 109 and 110.. you'd think those doesn't have vertical stabilizers or fuselage stabilizing)