[olug] Ubuntu losing network

[Obi-Wan]

> Nov 24 23:14:53 enterprise kernel: [39484.816049] WARNING: at
> /build/buildd/linux-2.6.27/net/sched/sch_generic.c:219
> dev_watchdog+0x272/0x280()
> Nov 24 23:14:53 enterprise kernel: [39484.816054] NETDEV WATCHDOG:
> eth0 (r8169): transmit timed out
> Nov 24 23:14:54 enterprise kernel: [39485.632083] r8169: eth0: link up
> Nov 24 23:18:00 enterprise kernel: [39671.632044] r8169: eth0: link up
> Nov 24 23:21:30 enterprise kernel: [39881.632043] r8169: eth0: link up
> ...
> Nov 25 08:16:18 enterprise kernel: [71969.632044] r8169: eth0: link up
> Nov 25 08:17:30 enterprise kernel: [72041.632044] r8169: eth0: link up
> Nov 25 08:18:49 enterprise syslogd 1.5.0#2ubuntu6: restart.

Hmmm... it looks like your link is bouncing up & down.  I think Dan
& Carl were on the right track.  Try a live CD, and if the same thing
happens (as I expect it will), you've probably got a hardware problem.
Try switching network ports in your switch if you have any to spare.
Try using a different NIC in your machine if you can.  The good news
is that this appears to be happening frequently enough that it shouldn't
take long to determine if you've fixed (or at least affected) the problem.

-- 
Ben "Obi-Wan" Hollingsworth                             obiwan at jedi.com
   The stuff of earth competes for the allegiance I owe only to the
     Giver of all good things, so if I stand, let me stand on the
       promise that You will pull me through.  -- Rich Mullins