When I use wicd, there is always a clean shutdown, without any delays. On my 12.10 installation using NM 9.6.0, I can get clean shutdowns by unchecking 'available to all users'. Checked, on the current network connection results in an unclean shutdown -- 100% reproducible.
Ernie, have you tried temporarily replacing NM with wicd on 13.04? (See https:/ /help.ubuntu. com/community/ WICD)
When I use wicd, there is always a clean shutdown, without any delays. On my 12.10 installation using NM 9.6.0, I can get clean shutdowns by unchecking 'available to all users'. Checked, on the current network connection results in an unclean shutdown -- 100% reproducible.