john engates, the chief technology officer at rackgates, a server and software company. he's been inside the government website's command center. welcome to you both. mary agnes carey. 750now, well on its way to the 800,000 number national white house was talking about today, by 5:30 p.m. eastern. how is that different from what we saw a month ago? >> they say that it's more than double the usual traffic for a monday. and of course there has been a lot of news coverage of the changes they made on the web site. so maybe they are getting some people back who had some problems before. >> ifill: but there are still problems. i want you to explain what people mean when they say the front end and back end. >> the front end is the consumer experience. consumers logging on to heldcare.gov, and back end is information that goes to the health insurers, how many people are enrolled, do they have a subsidy, how much and so on. >> ifill: so the back end is the remaining problem right now, even though we assume that the patches that are made today will hold at the front end, 9 back en