That's a compiz issue, not a network-manager one. The problem is that the keyring window is not being rendered, so you don't see what you are writing, though you are writing there.
** Changed in: network-manager (Ubuntu) Sourcepackagename: network-manager => compiz -- [Feisty] Keyring for networkmanager doesn't allow for keyboard inputting of password https://launchpad.net/bugs/89491 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
