Hi, I've been having some issues with my server that at times it runs the application smoothly but lately there has been some irregularities in the performance. We run the server on Rackspace but they are telling us that the problem is in our end. Our site is running on Drupal. We've been having irregularities in the loading Time in the DOM processing and the Page rendering. I was wondering if you've got some advice on where to begin searching for answers. I have limited experience when it comes to System Administration and would like to hear some pointers to where should I head to. Thank you very much for your help. Appreciate it.