Here's what I saw... Nothing. Just patched to play on PTS and now my security key is not working. On phone to CS atm.
There is a thread in the CS section http://www.swtor.com/community/showthread.php?t=600668
The last several of us have reported issues after patching to play on the PTS. Just putting this out there for folks who may want to wait to see if this is a related issue and gets resolved.