…cache.php… failed to open stream: Too many open files in….wp-settings.php

I’m getting this error message instead of my usual pages.

Warning: main(/var/www/virtual/theconsortium.sohost.co.uk/gogreen_theconsortium_co_uk/htdocs/wp-includes/cache.php): failed to open stream: Too many open files in /var/www/virtual/theconsortium.sohost.co.uk/gogreen_theconsortium_co_uk/htdocs/wp-settings.php on line 157

Fatal error: main(): Failed opening required ‘/var/www/virtual/theconsortium.sohost.co.uk/gogreen_theconsortium_co_uk/htdocs/wp-includes/cache.php’ (include_path=’.:/usr/share/php:/usr/share/pear’) in /var/www/virtual/theconsortium.sohost.co.uk/gogreen_theconsortium_co_uk/htdocs/wp-settings.php on line 157

which you can see at gogreen.theconsortium.co.uk

I recently installed the latest version of execphp but I deactivated it and deleted the file before I got this error. However I can’t think of anything else I have done that may have caused this.

Any ideas at all as to why this has happened. Very grateful for any suggesions.

Thanks.