низкая скорость при копировании

Уже запарился. 
При копировании по локалке большых файлов скорость падает от 12Мб до 1Мб/с, сетевые везде встроенные Ethernet controller: Attansic Technology Corp. L1 Gigabit Ethernet Adapter, свич 100Мб Dlink.
Пробовал scp, rsync, ftp - одно и тоже(( 

ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:1f:c6:3e:10:44  
          inet addr:192.168.0.157  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:265862 errors:0 dropped:0 overruns:0 frame:0
          TX packets:125347 errors:0 dropped:0 overruns:0 carrier:1
          collisions:0 txqueuelen:1000 
          RX bytes:374359868 (357.0 MB)  TX bytes:8519116 (8.1 MB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:20 errors:0 dropped:0 overruns:0 frame:0
          TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1560 (1.5 KB)  TX bytes:1560 (1.5 KB)


ethtool eth0
Settings for eth0:
	Supported ports: [ TP ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Supports auto-negotiation: Yes
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Advertised auto-negotiation: Yes
	Speed: 100Mb/s
	Duplex: Full
	Port: Twisted Pair
	PHYAD: 0
	Transceiver: internal
	Auto-negotiation: on
	Supports Wake-on: umbg
	Wake-on: d
	Link detected: yes