Linux 64 bits dedicated server: highspeed issue!

[striikiito]

Hello,

For some weeks, I try to configure my team fortress 2 server but I have some problem. When I play on my server, everything is highspeed. Elapse time on server is too speed! 5 minutes on server is 30 secondes on reality . I think the tick is too high but I set it to 66.

I joined some informations:
-Net_graph: http://imgur.com/OpjXD
-Server.cfg: http://www.mediafire.com/?hpn9uavp93v7rh6
-Console viewer: http://www.mediafire.com/?lndanjdbvc24x77
-Movie of my highspeed server: http://youtu.be/xT_fFqh2it4

Informations:

Ubuntu 11.04 Kernel 2.6.38-13-generic
processeur intel core 2 @ 1,4 GHz
RAM 2048 Mo

Thank you,
Regards,
Striikiito.

[striikiito]

http://forums.steampowered.com/forum...php?p=29346137

I wish how fix this problem without change my linux version.

Thank you.