The most common solution is to issue a netstat -ni and look at the output corresponding to the interfaces mentioned in the error message. In a number of similar cases we've noticed a huge number of collisions on these interfaces.
ipso[admin]# netstat -ni
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
loop0 0 0:0:0:0:0:0 0 0 0 0 0
pppoe0 1492 0:0:0:0:0:0 0 0 0 0 0
soverf0 1500 0:0:0:0:0:0 0 0 0 0 0
stof0 65535 0:0:0:0:0:0 0 0 0 0 0
tun0 0 0:0:0:0:0:0 0 0 0 0 0
eth1 1518 0:a0:8e:99:bc:93 185307 0 72412 0 0
eth2 1518 0:a0:8e:99:bc:94 4611410 0 3389113 76263 76263
eth3 1518 0:a0:8e:99:bc:95 20 0 0 0 0
eth4 1518 0:a0:8e:99:bc:96 3398470 0 4612687 93341 93341
Check the speed / duplex settings on these interfaces and the devices they connect to as there is most likely a mismatch.
