NM connects to wired and wireless at the same time. No problem. Your system can't find the printer because it doesn't have the write routing configuration. You will have to add that information in Edit Connections....
** Changed in: network-manager (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/591686 Title: Network manager shows both wired & wireless connected Status in “network-manager” package in Ubuntu: Invalid Bug description: Binary package hint: network-manager Network Manager applet (on Lucid) shows both wired & wireless connected (to different routers) as I have 2 routers each connected to a different ISP. This works OK for Firefox but printing to printer (USB connected printer connected to another PC connected to wireless router) does not work as the Printer applet says that the printer is not connected. On karmic (& previous), I only got connection to wired (i.e. not wireless ) and I could print by unplugging ethernet cable & connecting wirelessly (i.e. to router connected to another PC with USB printer. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: network-manager 0.8-0ubuntu3 ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2 Uname: Linux 2.6.32-22-generic i686 Architecture: i386 Date: Wed Jun 9 12:25:47 2010 IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429) InterestingModules: b44 IpRoute: 192.168.2.0/24 dev eth0 proto kernel scope link src 192.168.2.82 metric 1 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.82 metric 2 169.254.0.0/16 dev eth0 scope link metric 1000 default via 192.168.2.1 dev eth0 proto static Keyfiles: Error: [Errno 2] No such file or directory ProcEnviron: LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: network-manager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/591686/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp