PONEER has a firmware update avalible for those who have lost use of PANDORA recently on their PIONEER AVR.
http://www.pioneerelectronics.com/PUSA/Home/AV-Receivers/Pioneer+Receivers/VSX-1121-K?tab=firmware
I recently picked up the VSX-1121K from an authorized dealer for $369 and I think the shipping was free. An awesome unit but many people have reported a few quirks about the unit. I reccomend it.
It has never worked streaming it through the AVR via the internet. I can log in okay but listening to a channel is a no go. I stream PANDORA through the AVR via the internet and it works great.