The service still seems really slow, especially when trying to log in or access the dashboard which may lead to the server timing out before I receive a response. Have you looked into separating the ad server and the actual advertiser/publisher sites? That would help with the actual site loading very poorly, which I imagine is the most annoying issue at the moment. Visitors won't probably mind if an ad spot takes a while to load, but as a publisher I find it very irritating the page times out multiple times before I can look at the stats.