samba - Oct 2008 - slowdown in the network with Samba 3.0.26a

Hello,

I am using the version of Samba 3.0.26a through an architecture for 64-Bit,
but I have noticed a slowdown in the network and would like to know if any
of you have had a similar problem and managed to resolve it.
Now I am grateful for the help.

Edgar Nunes