Please try setting Virtual memory management to auto.
Seeing as Windows is bitching about a lack of memory, you should let him drive your car. And if the game keeps crashing afterwards, you'll take the wheel back. What do you say?
I'll give it a try to set it auto. Hmm... interesting. The server I was playing was quite full of players at that time. I'll try fly on another server.
Thanks Flappie, you're awesomely helpfull.
Cheers.