FreeBSD SAMBA file server performance - strange behaviour

[Wojciech Puchar]

> address from the fileserver, i get performance increase in the transfer speed 
> - the bigger the traffic i generate, the better the results, which max out at 
> 25-27 MB/sec with flood ping.
>
> Has anyone else experienced any similar behaviour?
>
yes. there was (but at 100Mbit/s) autonegotiation problems, switch got 
"half duplex" while computer worked full duplex - which lead to packet 
losses. setting manually to 100Mbit/s half-duplex (on server) fixed this.

but check, it may not be your case