I've noticed the same thing occur (if I boot up with the ethernet cable attached network traffic is fine, however after unplugging and plugging the ethernet cable back in traffic is quite slow) using Intrepid and the following network-manager package version:
0.7~~svn20080908t183521+eni0-0ubuntu4 ** Changed in: network-manager (Ubuntu) Importance: Undecided => High Status: New => Confirmed -- Wired and wireless connection to the same router cause confusion https://bugs.launchpad.net/bugs/277063 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs