You want to add an access-list for networks you do not want to have 'nat' applied to, such as VPN RA network like your config is setup for. Try adding:access-list NONAT_NETWORK extended permit ip 192.168.0.0 255.255.255.0 192.168.100.0 255.255.255.0!...
Do you have the following command in your config?isakmp nat-traversalThis command allows multiple client connections from a single source. (ie. Hotel, home, remote office with internet only...)