lockups/freezes/pauses - 8.1-release/amd64 + XEN

[Alex]

Found something interesting from an email sent by the daily cron:

Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll
re0 1500 <Link#1> 00:16:3e:f0:8b:6c 160763 0 0 12053 0 12024

Uptime is about a day, 12024 collisions. That couldnt be good! Houston 
we have a problem. Now whether this is a bug with the re() driver or a 
side effect of something else, I dont know.