My wallet today also got only one connection (the same IP as yours). I remember it having two connections few days ago though, but I did not take note of the IPs then.
Reports "No block source available", despite the fact I am on block 660564, while my peer is on block 674121..

I assume there is a fork in the network, and I am on a different fork than my peer. That's the only explanation of "No block source available" message.
I have few unconfirmed mined blocks with about 20 confirmations. So I assume my chain is the shortest.

Will try to resync and report.