(Washington, DC) -- The White House is reporting big improvements in the Healthcare.gov website. After a disastrous rollout of the website which featured error messages and frequent crashes, administration officials said today the site is working for the "vast majority" of users. Jeffrey Zients , who's heading the website repairs, says a five-week emergency "tech surge" has doubled the capacity of the online health insurance portal. He says the site is more responsive and less prone to errors. Zients says the bottom line is the website on December 1st is night and day from where it was on October 1st.