Honestly Tom! It's very, very quiet, at least for me.
I just listened to the AVRant podcast and Tom questions the quietness claims.
To you guys hearing a loud PS3 it might have been addressed in the version. I had a review PS3 when it first came out - the one that had SACD decoding and PS2 emotion engine chips - and that fan did kick on regularly even though was just before Christmas and I had it setup in the basement where i live in Canada - it was damned cold.
My new PS3 is the new striped down model. I have yet to see a day that gets up to 75 degrees, I got the PS3 in the winter so it hasn't had to perform in a hot environment. I can assure you when that fan isn't on it's dead silent. Compared to the Xbox 360 - OMG.
I definitely agree though, PSN suxorz compared to XBL - there is no comparison. All the little intangibles about XBL become apparent, things you might not even put into a "review" unless you'd used both systems.
My favourite feature of XBL that PSN misses is the ability to perma-mute an account.
When I'm playing Call of Duty 5 on PSN, as I do more than I care to admit... I hear some doofus playing rap music through his headset - I'd love to perma-mute. Sadly, I can only mute after the game starts. When we're back into the lobby I have to hear the idiot again and can't re-mute until the game starts.
Why is it always rap music? If you're just looking to annoy why not an endless loop of puking sounds or farting or something really disgusting. I think that would annoy everyone in your game far more and it would be kind of original, I'd almost have to give kudos to the ill mannered kid who pulled that off - just before I mute them.
God I miss XBL's ability to decide that I never, ever, ever want to hear a sound from a certain XBL account ever again, no matter what game.