What does this error mean? Some of my visitors to a site sitting on a VPS encounter the error message below. They can't access the site. Apache/2.2.11 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.8b mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.6 Serve
that looks like what your vps is running not the error message ? (error message would display above that depending on your setup.) you also need to know if they are getting 404 or 500 error pages etc to help give you a clue and what url they tried to look at. Have you looked at your error logs ? also look in the root for the domain and see if there is a file called error_log it may or may not be there and if it is will give you more information... depends how things are set up.... on my cpanel setup it makes that file and gives me more information..
404 just means page not found. if it was a script not starting due to low ram i would have expected a 500 error. have a look through your error logs. could be anything from a typo to a dead link etc. basically you need to give more information or they need to give you more information. If you have "Awstats" installed on the domain, near the bottom of the page it will have a link for 404's and that will then list the pages that gave the 404 and how often along with the Referers url. other than that its all guess work based on the information so far *sigh*