Interesting, MIT doesn't focus very much if at all in databases and networks.
It's an insanely good course though, i'm starting from class 1 and i'm learning things (i've been programming for 5 years, 2 professionally). The exercises are not dumbed down at all, the second exercises my classmates from college wouldn't be able to complete in a whole week.
Anyone else followed their online course too? How long did you do it for?
Most of these are related to analysis, malware, crypters, etc. So if you're not into that, there are a few good links about anti-virus and some code stuff... If you don't use Tuts4U you def should, years of good shit on there.