I recently tossed Ubuntu 8.10 on my Mac Mini at home to use it as a home theater PC (with Boxee). When I connected to my wireless network via NetworkManager, I entered my WPA2 passphrase, and then I was prompted to enter a password for gnome-keyring. I went back to the couch, SSH’ed in, and continued configuring it remotely. When it rebooted, it never came back online. Once I switched the TV back over to the Mini, I saw that gnome-keyring had popped up and it was asking for my password.