I have been looking through error logs & found this error appearing several times...
PHP Fatal error: Call to a member function get() on a non-object in .... httpdocs/wp-includes/cache.php on line 93
Our site is hosted on mediatemple dv extreme server. WP version is 3.0 & WP Super Cache is 0.9.9.6
I tried different solutions found on this site which are about 1 year old, that didn't help.
Please help to fix the problem.