Comment 37 for bug 284377

Brandon, unless you were seeing the "No buffer space available" errors when running ifconfig, my gut tells me you ran into a separate problem. My suggestion to you would be to upgrade your machine to 9.04 at minimum, or if you're brave try the Karmic Beta ( or just wait two weeks for the final release ). At that point, if you run into the same connection problem again, please use the command:

ubuntu-bug network-manager

..to report the problem, as that will give us more information ( like driver type, NM log messages, etc... ) to help determine your problem.