For those using a PS3 slideshow + music feature as an alternative to the AppleTV -- with the 3.10 firmware update while playing music you cannot access slideshows, internet, settings, etc. without first closing the music browser. I called customer support and they were surprised. They tested their PS3 and confirmed the same. It was the first anyone there heard of this. They said hopefully 3.11 would be out soon.
UPDATE: see below...
UPDATE: see below...