Ok, so these logs show that when you installed your machine, you had a single 
network interface, called eth0 at the time which was an Nvidia network card 
with MAC address:
00:0c:76:7e:fe:89

Nowadays, the only piece of nvidia hardware you seem to have is a graphic card. 
Your network cards now are:
00:17:31:a2:7d:55
00:17:31:a2:7f:ad

You also once plugged a USB network card in this machine.


So based on this, my guess is that you changed hardware in this machine quite 
significantly, resulting in the change of network cards.
When you installed your machine, it was a AMD Athlon(tm) XP 3200+ but nowadays 
it's a AMD Athlon(tm) 64 X2 Dual Core Processor 4200+

When you switched hardware, you should have changed /etc/udev/rules.d/70
-persistent-net.rules to match the new network hardware so that your new
main network card would be assigned eth0 instead of eth1.

The easiest way to do this, is my simply removing all the network
interfaces from this file and rebooting, it'll then get populated again
with the new values.


If what I'm saying above sounds correct and the problem instead started 
appearing after the change of hardware, this isn't really a bug, it's actually 
the expected behaviour when moving an install to new hardware (network device 
names are linked to the MAC address to avoid them switching order between 
boots).

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https://bugs.launchpad.net/bugs/900903

Title:
  "Waiting for network configuration" due to uncommented 'auto' lines in
  /etc/network/interfaces (historical installer/upgradebug?)

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