Can explain what is the "default keyring"?

When I try to connect to a network it’s sais:

The application <<Network Manager Applet>> (/usr/bin/nm-applet) wants access to the default keyring,but it is close

I have read My wireless doesn’t work - a primer on what I should do next - openSUSE Forums and everything seems to be fine, because i see the wireless network.

It would seem you’ve stored your network access password in a keyring (that would be the KDE wallet IIRC) and the keyring is not running.