Well it would appear that Sony heeded my advice and took down the PS3 2.40 patch. Now, according to Sony, it wasn't to give us something to complain about, but rather because people were complaining anyway. It seems the firmware didn't take for all users, and gave a few some problems, so they took it back down for debugging. Maybe it'll be back up soon, maybe not.
Personally, I was somewhat anxious to check out trophies so I was online Wednesday morning checking for the update and got it just fine, as well as the Super Stardust update with Trophy support. I've been working on unlocking them ever since (PSN ID Maluraq if you'd like to compare).
The in-game XMB access is pretty cool and very smooth I might add. Its not as fast as when you're not playing a game, but I can scroll through my trophies and friends list and look at music titles and such while a car slowly rotates in the background (the live 'screensaver' view from Gran Turismo 5: Prologue). In fact, that's what most impressed me -- the XMB does not automatically pause the game that you're playing, but instead leaves it running (unless the game itself chooses to pause as a result) which makes for some cool background graphics in the case of GT5:P or when running Folding@Home.
I'll be getting those trophies before anyone else can while you guys wait for the firmware to be available again :-)