Dropped Packets

In the constant effort to find out why in the hell writing to my raid server is crawling at about 1.4 to 2.5 mb/sec.  I think it must be either a drive or the NIC? I am not using the NIC one in the motherboard as it is 10/100. I have a PCI 10/100/1000 card installed  I wonder if these dropped packets are the cause or a symptom of the problem:

Ethernet info

NIC info (from ethtool)Settings for eth0:

Supported ports: [ TP MII ]

Supported link modes:  10baseT/Half 10baseT/Full                        

100baseT/Half 100baseT/Full                        

1000baseT/Half 1000baseT/Full

Supports auto-negotiation: Yes

Advertised link modes:  10baseT/Half 10baseT/Full                        

100baseT/Half 100baseT/Full                        

1000baseT/Half 1000baseT/Full

Advertised auto-negotiation: Yes

Speed: 1000Mb/s

Duplex: Full

Port: MII

PHYAD: 0

Transceiver: internal

Auto-negotiation: on

Supports Wake-on: pumbg

Wake-on: g Current message level: 0x00000033 (51)

Link detected: yes

NIC driver info (from ethtool -i)driver: r8169version: 2.3LK-NAPIfirmware-version: bus-info: 0000:04:00.0Ethernet config info (from ifconfig)

eth0     

Link encap:Ethernet  HWaddr e0:91:f5:1b:4d:b7           

inet addr:192.168.0.125  Bcast:192.168.0.255  Mask:255.255.255.0         

UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1         

RX packets:162896 errors:0 dropped:362 overruns:0 frame:0         

TX packets:44895 errors:0 dropped:0 overruns:0 carrier:0         

collisions:0 txqueuelen:1000         

RX bytes:238373934 (227.3 MiB)  TX bytes:3738053 (3.5 MiB)         

Interrupt:20