[server] two network interface, but one is extremely slow in samba

Dear All,

i have two network interfaces, one is eth0 for connect inteet, and one is p1p1 to connect another computer(win7) directly through LAN cable. I can browse the folder both in win7 and ubuntu, but i cannot write/or extremely slow any files..here is my interfaces

# The loopback network interfaceauto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.1.220
boardcast 192.168.1.255
netmask 255.255.255.0
gateway 192.168.1.1
network 192.168.1.0
dns-nameservers 192.168.1.1

auto p1p1
iface p1p1 inet static
address 192.168.2.11
netmask 255.255.255.0

and i got 2k errors on RX packets, is it normal to get so many errors RX packets?

Thx

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