Yeap, it's due to someone running an out of date node.
The seed nodes are accepting all transactions, you can test this by sending some IRD to yourself, and seeing if it confirms in transactions. It works for me, so it should work for everyone now.
I installed v2 Gui wallet on Linux and opened a v1 wallet. This worked fine. I then tried sending coins from the v2 wallet to another v2 wallet. After several hours I still have 0 confirmations.