Just updated FW to 360c on my BD550, and here on the West Coast at 2:25am - it took literally less than 5 minutes.. no joke. The blue download bar just raced across the screen, and actually took longer while "updating.." the player than the download!
The good news is everything I checked out worked like a gem
* No chapter skip/audio problem on SDVD (and PQ was amazing..hmmm it's been so long have I forgotten how good upsampled DVD's looked?..

* YouTube video was outstanding (watched 'usopensurfing')
* All VUDU audio on previews and trailers worked great
* Pandora fine
* DivX TV fine
* Gracenote worked on CD's, SDVD's and Blu-ray's equally as well
I don't have Netflix, sorry folks...
I was like Splicer, and wasn't gonna move from 323c, but so far so good...
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"Does it make a good mix with scotch?" "It should". "I'll let ya know..."
B