erreur Maximum execution time of 30 seconds exceeded in d

[stephane52]

Bonjour,
sur mon site j'ai installé le moteur de recherche sphider.Lorsque je veux indexer mon site au bout de 30 secondes environ il m'affiche:
Fatal error: Maximum execution time of 30 seconds exceeded in d:......
Je suis allé sur leur forum et il y a marqué:
I receive a "Fatal error: Maximum execution time of xx seconds exceeded in ...." or a "Warning: set_time_limit() has been disabled for security reasons" message after starting indexing.
This means that PHP is running in safe mode in your server. You need to turn off PHP safe mode in order for Sphider to work properly. See http://www.php.net/features.safe-mode on how to do this.
Je voudrais savoir comment faire pour régler ce problème ?