1- Are you running the UBB Accelerator?
2- How many page views are you getting per month (current figure would be sufficient)
3- Have you reviewed
https://www.ubbcentral.com/ubb/ultimatebb.php/topic/9/57.html 4- Do you have recent visitors enabled
5- Do you have any forums with > 3000 topics?
6- How many members are registered on your boards?
