I eventually tracked this down when I was trying to use Sidebox Anywhere with WordPress (v3.3.1 - Genesis 1.8). Execution stalls at:
PHP Code:
$configuration = $db->Execute('select configuration_key as cfgkey, configuration_value as cfgvalue
                                 from ' . TABLE_CONFIGURATION, '', $use_cache, 150); 
The select runs in phpMyAdmin. Has anyone come across this or can you help me with how to debug this.

Many Thanks