Update from MaidSafe HQ
Good news - we seem to have resolved all major hanging issues that have been pestering us for this last week 
We’ve been thoroughly testing the latest fixes for the majority of the day now and have had a clean bill of health. We can’t guarantee that there won’t be other “hanging” bugs yet to be discovered, particularly once we get a larger number of people connected to it and connecting/disconnecting their nodes, but it seems that standard usage of the testnet is looking great.
No testnet today though as it seems the fixes & improvements we’ve added over the last few days have introduced a few other, thankfully relatively minor issues. For example, the 3 minute loop to retry connecting a node to the testnet when it’s not accepting new nodes, is currently not working. Also, we’ve found a bug in chunk replication, with resolution PRs here and here currently under peer review.
We’ll be sweeping through these minor issues and checking to see if anything else needs attention.
Thanks everyone!