Cryptopia said they are investigating 51% is it an attack or is it sedgwit anyone know?
I've heard claim after claim after claim of "double spend" or "51%" attacks on dozens of coins and not yet seen a single shred of proof to back any such claim.

Yep and Bittrex reported it almost 2 days before Cryptopia did anything.
I sent coins from my UNB desktop wallet to Cryptopia just before they shut down the market, my coins are currently marked as unavailable in my Cryptopia account :s
In spite of all this, it seems to be flying on Bittrex the last couple of days. Hopefully we will be able to send our coins over there in due course.