Same problem here, with one additional glitch. Mailshield and WebShield controls are linked. Either they're both on, or they're both off. i.e., Turning off the Mailshield also turns off the web shield (and restores my email functionality). Turning off the Web Shield also turns off the Mailshield. Similarly, both shields turn "on" together.
Tumic, here's the requested output of the terminal command you posted earlier:
[cat /var/log/system.log | grep 'proxy\[[0-9]*\]']
Jun 2 10:50:37 David-Gues-MacBook-Pro proxy[12383]: Starting daemon.
Jun 2 10:50:37 David-Gues-MacBook-Pro proxy[12383]: Error opening hosts file: fopen(): No such file or directory
Jun 2 17:20:22 David-Gues-MacBook-Pro proxy[12383]: Wrong AV daemon statistics pop response code (431)!
Jun 2 17:23:33 David-Gues-MacBook-Pro proxy[12383]: Error reading receive buffer: read(): Connection reset by peer
Jun 2 17:29:34 David-Gues-MacBook-Pro proxy[12383]: Error connecting to server: connect(): Invalid argument
Jun 2 17:30:29 David-Gues-MacBook-Pro proxy[12383]: Error connecting to server: connect(): Host is down
Jun 2 17:30:29 David-Gues-MacBook-Pro proxy[12383]: Error connecting to server: connect(): Host is down
Jun 2 22:21:55 David-Gues-MacBook-Pro proxy[272]: Starting daemon.
Jun 2 22:21:56 David-Gues-MacBook-Pro proxy[272]: Error opening hosts file: fopen(): No such file or directory
Jun 2 22:25:59 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 22:26:11 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 22:26:17 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 22:27:14 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 22:27:52 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 23:09:06 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 23:09:10 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 23:09:30 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 23:10:44 David-Gues-MacBook-Pro proxy[272]: Error connecting to server: connect(): Invalid argument
Jun 2 23:12:47 David-Gues-MacBook-Pro proxy[281]: Starting daemon.
Jun 2 23:12:47 David-Gues-MacBook-Pro proxy[281]: Error opening hosts file: fopen(): No such file or directory
Jun 2 23:15:50 David-Gues-MacBook-Pro proxy[281]: Error connecting to server: connect(): Invalid argument
Jun 2 23:18:46 David-Gues-MacBook-Pro proxy[281]: Error connecting to server: connect(): Invalid argument
Jun 2 23:18:46 David-Gues-MacBook-Pro proxy[281]: Error connecting to server: connect(): Invalid argument
Jun 2 23:18:59 David-Gues-MacBook-Pro proxy[281]: Error connecting to server: connect(): Invalid argument
Jun 2 23:19:05 David-Gues-MacBook-Pro proxy[281]: Error connecting to server: connect(): Invalid argument
Jun 2 23:19:47 David-Gues-MacBook-Pro proxy[281]: Error connecting to server: connect(): Invalid argument
Jun 2 23:21:50 David-Gues-MacBook-Pro proxy[281]: SIGTERM received. Exiting.
Jun 2 23:22:51 David-Gues-MacBook-Pro proxy[735]: Starting daemon.
Jun 2 23:22:51 David-Gues-MacBook-Pro proxy[735]: Error opening hosts file: fopen(): No such file or directory
Jun 2 23:23:25 David-Gues-MacBook-Pro proxy[735]: SIGTERM received. Exiting.
Jun 2 23:23:34 David-Gues-MacBook-Pro proxy[880]: Starting daemon.
Jun 2 23:23:34 David-Gues-MacBook-Pro proxy[880]: Error opening hosts file: fopen(): No such file or directory
Jun 2 23:23:50 David-Gues-MacBook-Pro proxy[880]: SIGTERM received. Exiting.
Jun 2 23:24:04 David-Gues-MacBook-Pro proxy[1022]: Starting daemon.
Jun 2 23:24:04 David-Gues-MacBook-Pro proxy[1022]: Error opening hosts file: fopen(): No such file or directory
Jun 2 23:24:11 David-Gues-MacBook-Pro proxy[1022]: Error connecting to server: connect(): Invalid argument
Jun 2 23:24:11 David-Gues-MacBook-Pro proxy[1022]: Error connecting to server: connect(): Invalid argument
Jun 2 23:24:27 David-Gues-MacBook-Pro proxy[1022]: SIGTERM received. Exiting.
David-Gues-MacBook-Pro:~ david$