Drupal site just sits there loading and eventually times out?  Check sites/default/settings.php.  In particular, you may be loading stuff that will slow you down/bring your site to a halt.  For instance, try commenting out:

$conf[‘cache_backends‘][] = ‘sites/all/modules/memcache_storage/memcache_storage.inc‘;

$conf[‘cache_default_class‘] = ‘MemcacheStorage‘;

$conf[‘cache_class_cache_form‘] = ‘DrupalDatabaseCache‘;

$conf[‘cache_backends‘][] = “sites/all/modules/memcache/memcache.inc“;

$conf[‘cache_default_class‘] = ‘MemCacheDrupal‘;

$conf[‘cache_class_cache_form‘] = ‘DrupalDatabaseCache‘;

Or any one that pertains to caching.