There's something seriously wrong with the new design. Clicking on just about anything results in a 5-15 second loading time for pages, it feels like it is bogged down in database queries for routine page access. Furthermore, some class pages have out of control javascript that pummels most browsers and pins CPUs. Wasn't like this at all before the new design, which seems to not have been tested.

Hey droithomme, could you please email some concrete examples (like I'm on page X, do Y after which there is a long delay) to attila [at] udacity.com? We're trying to iron out all the issues as quickly as possible.

The course catalog looks very much like Coursera's, which isn't bad.

The UI for a specific class, the unlabeled boxes above the videos to display progress, is horrible though. The list to the right side of the video was far clearer. Each unit of a course is accessed via a drop down now, as opposed to the collapsible list that used to be to the right of the videos.

Also, they seem to have lost all their orange.