Problem loading maps!

[Hotas]

Hello, I just compiled a TFS 0.3.6p1 server on my ubuntu server 64bit server!
The problem is that when I start to load bigger maps it load for awhile and then the text "Killed" appears! What things are causing that? =)
Smaller maps works fine :=)
4gig ram, 3.2GHz
/Hotas

 

[Hotas]

Noone had this problem before? Its pretty hard to fix by myself when I have no idea what is causing it :/ "Killed" aint really a good error message :/