The first time I try and connect via a vpnc profile, Shimo asks for a password and I enter the correct one and tick the box to enable the password to be saved in the keychain. Shimo then displays a dialog about User Authentication failed. It then thinks it is still connecting and I have to manually disconnect.
When I repeat the process and get Shimo to connect a second time, it asks for the password again (despite being told to use the keychain to remember it) and then according to the menubar icon it connects without any errors but no actual routing over the vpn takes place.
The cisco profile connects and works fine.