I just want to say all of you on flyertalk are awesome! I have a roundtrip business class ticket - JFK-HKG-BKK; SIN-HKG-JFK, where taxes were $46 (booked in Feb). I was recently able to upgrade the outbound JFK-HKG to First, and now I have a $12 fare and $86 in taxes. The agent wasn't able to explain why I had a $12 fare and much more in taxes and I didn't pursue it - I was too excited to snag that F seat... Assume this security fee was implemented after Feb.