oh yea! replug to another port works fine. should be a faulty switch port.
MyBookLive:~# dmesg | grep eth0
eth0: EMAC-0 /plb/opb/ethernet@ef600c00, MAC 00:90:a9:b5:1e:b3
eth0: found BCM54610 Gigabit Ethernet PHY (0x01)
eth0: link is up, 1000 FDX, pause enabled
eth0: link is down
eth0: link is up, 1000 FDX, pause enabled
eth0: link is down
eth0: link is up, 100 FDX, pause enabled
eth0: no IPv6 routers present
eth0: link is down
eth0: link is down
ADDRCONF(NETDEV_UP): eth0: link is not ready
eth0: link is up, 1000 FDX, pause enabled
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
eth0: no IPv6 routers present
thanks mate! 
