Got the same problem so I'm attaching my own logs
Noticed some warning messages when running manually dhclient [ 1154.691236] NETDEV WATCHDOG: eth0: transmit timed out [ 1154.699360] r8169: eth0: link up
$ uname -a Linux gemini 2.6.24-3-generic #1 SMP Thu Jan 3 22:50:33 UTC 2008 x86_64 GNU/Linux
Got the same problem so I'm attaching my own logs
Noticed some warning messages when running manually dhclient
[ 1154.691236] NETDEV WATCHDOG: eth0: transmit timed out
[ 1154.699360] r8169: eth0: link up
$ uname -a
Linux gemini 2.6.24-3-generic #1 SMP Thu Jan 3 22:50:33 UTC 2008 x86_64 GNU/Linux