incoherent connection problem

Hello,

I have a server running for some days without care.
I installed following this guide: http://forum.ragezone.com/f452/serve...-4-2-a-698047/
My machine is a Debian Lenny x64

Since yesterday evening, the connection seems to login latencies and after a while, no longer responding.
I mean it is impossible to connect.
The requests sought in vacuum and we get a:

Quote:

"error in server and network" and "TRACE: gdelivery: passwdtimeout. user = qqq
TRACE: gdelivery: matrixpasswd missing cache, user = qqq
TRACE: checkpoint begin.
TRACE: checkpoint end. "

Auth.log:

Quote:

authd:: add PollIO task.
GAuthServer::OnAddSession com.goldhuman.IO.Protocol.Session@2bd1e730
gauthd: 22 fÃ©vr. 2011 14:41:53,061 INFO GAuthServer:? - <<< clear all online records on zone 1 >>>
GQueryPasswd:account is qqq , login ip is -632769704
Sending query to acquire password

The first reboot solved this puzzling problem, and now the problem is back!
Except that the reboot of the server emulator and a reboot does not fix the problem.

I would point out that this problem is appeared suddenly and before everything worked properly.

would you have an idea?