[Jtsummers]

This depends on the language path. I've been mentoring a few of the language paths, but as an opportunity to learn/use the system, I've also been a student on a number of them. Some are overwhelmed. For instance, there was an online course on Prolog earlier this year the seemed to overwhelm the Prolog track with a glut of new students. Other tracks have problems that are harder to mentor, the code is complex, so some mentors choose to avoid those problems creating a bottleneck. Their choice is reasonable, but without more experienced mentors the problem just gets worse.

Additionally, they're working on the third version of the site. So a lot of people are focusing their attention on that, or dividing their attention between making new content and handling the current load.