Running regular 7.10 ( 2.6.22-14-generic) on a AMD64 computer (don't want to use the 64-bit version of Ubuntu for reasons like flash) , onboard NIC using the forcedeth driver.
I seem to be having intermittent problems with my wired connection since switching to 7.10. Sometimes my wired connection just does not start at boot up. From where I sit I can see my router, and on these occasions no lights for that wired connection. When I log in to Ubuntu, no internet connection (the icon shows no wired connection).
If I do a hard boot, sometimes the connection starts at bootup, and everything's fine when I log in. Sometimes the hard boot doesn't help.
The connection worked fine before 7.10, and I have tried different cables, restarting the router, etc. I still get these random failures to even recognize the connection at boot up. Everything works fine when I'm not using Ubuntu 7.10. One thing that did work once was unplugging and replugging in to the NIC after logging in to Ubuntu. Viola, router lights come on and I have a connection.
If there's any more info I can give, please let me know, as I'd like to get this resolved.
Also wanted to mention that on the occasions that I do not have an internet connection, the LEDs on the NIC on the computer are not on either. It appears that Ubuntu is not waking up the NIC on boot up.