Question : Joomla site blank after upgrade

Hi,
Hoping some experts can help me with this..
I upgraded a Joomla site from 1.5.14 to 1.5.18 and now the site is blank - both the front and back ends. I'm guessing the upgrade overwrote some files and this has broken the site. I have checked configuration.php and everything seems to be OK in there.
Any ideas?
Thank you
-D

Answer : Joomla site blank after upgrade

Found another PHP error in the apache log
PHP Warning:  JFactory::require_once() [<a href='function.JFactory-require-once'>
function.JFactory-require-once</a>]: SAFE MODE Restriction in effect.  
The script whose uid is 0 is not allowed to access /var/www/vhosts/mysite.com/httpdocs/libraries/joomla/config.php owned by uid 10005 in /var/www/vhosts/mysite.com/httpdocs/libraries/joomla/factory.php on line 474

FIXED problem by un-ticking safe mode in the web sites setup hosting control panel.