Here's an interesting situation for the brains trust here...
After using the default Hardy Ubuntu Network-Manager for my wireless
connection for months it suddenly stopped working. I'm no linux guru
but I have worked with Ubuntu for six months and just could not
figure this one out. It could be my own fault (probably was!) as I
was experimenting with the Firestarter firewall's various settings.
My solution was to uninstall network-manager and put in Wicd, which
allowed me to connect just fine. However, there was a gotcha, it
won't start automatically on login and when exited won't stay online
or even in the system tray. I haven't found a setting that will
change this.
For now it's a good solution, but I sure wish I could get things back
the way they were a week ago!