Therefore, as an "instance" of a vps, /proc/user_beancounters doesn't actually exist.
The file /proc/user_beancounters exists in the vps as well if openvz or virtuozzo is used as virtualisation system. So if you dont have that file, it simply means that your provider uses a different virtualisation software.
I still believe that its a resource problem. A server that is installed according to the perfect setup guide that uses normally more then 250 MB RAM.