We bought 30 license of ESET Smart security 3 but my conclusion now is that product is unusable in an office environment. - It does not work with Microsoft CRM. The CRM web pages are blocked on Vista (even with the firewall disabled); the CRM contacts in Outlook are inaccessible on WinXP. Only uninstalling ESET SS solves this problem. - Several programs don’t get through the firewall with the default settings (the label printing software Seagull BarTender for example). These programs work fine with the Windows firewall. So it's an ESET problem. The fact that the firewall can't be disabled makes the problem even worse. And no, switching to "Interactive mode" is not an option, I can't bother the users with pop-ups they don't understand. Seagull BarTender only works in interactive mode with a rule 'allow all traffic' but then you don't have any firewall at all (because the windows firewall is disabled). - I always get an error message when I start the configuration editor. I can't edit any configuration any more. I did send several mails to the (local) ESET support but got no response after a week (except for "we received the mail and are looking into this"). - When I was still able to edit and update configurations, I always got an error message "Task processing error, error code: (1012,2)". After several mails to support (starting 2 weeks ago), I still have no idea what that means. My conclusion: don't buy this software.