Mark Curphey here
We are actively investigating intermittent reports of slow download speeds and some files not completing their full download size in some parts of the world. We made changes to the network yesterday and expect to make more later today.
We will be updating the @msdn twitter account with updates as they happen and our support folks are helping users in the MSDN Subscriptions forum.
Our apologies. We are actively working to get everything running and back to normal as soon as possible.