I had the same problem on
Linux localhost 3.2.0-36-generic #57-Ubuntu SMP Tue Jan 8 21:44:52 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise
Lenovo ThinkPad T430s and by removing these lines from /etc/networ/interfaces, it's all fixed. It boots pretty fast and wireless and ethernet works fine.
#remove these lines auto eth0 iface eth0 inet dhcp
I had the same problem on
Linux localhost 3.2.0-36-generic #57-Ubuntu SMP Tue Jan 8 21:44:52 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
Lenovo ThinkPad T430s interfaces, it's all fixed. It boots pretty fast and wireless and ethernet works fine.
and by removing these lines from /etc/networ/
#remove these lines
auto eth0
iface eth0 inet dhcp