We have a quite serious problem with our public webserver - it is a SBS 2003 without exchange and with SQL2000. This problem has been recurring intermittently for 6 months, but only around once per month for until this week when it has started to occur several times per day and therefore it has become serious.
The problem is that all browser clients get http 503 "Service Unavailable" error for all ASP pages. However, all html pages are served OK. Stopping and starting the WWW Publishing Service fixes this problem. There are no event log entries from the W3WP.
Thanks in advance