191w ago - Update: Sony has now told NowGamer.com that despite widespread reports they have seen no evidence of damage caused by the PS3 Firmware 3.21 update.
Sony has already upset some users by removing the "Install OtherOS" with its PS3 Firmware 3.21 update, and based on reports from the official PlayStation forums a sizable number of PS3 users have run into issues since updating to PlayStation 3 Firmware version 3.21 as well.
Problems after installing the update range from folks not being able to log into PSN or load a disc after the update to users not being able to turn on their PS3 at all - some have even reported freezing during the update process.
Of course, there's also lots of users that have updated without any issues whatsoever, and the problems don't seem to have yet drawn an official response from Sony.
Let us know how things worked out for you in the comments below.
244w ago - According to AltPlusF4.com (linked above), PS3 Firmware 2.70 is causing bricked systems. However, they are not bricked, just 'locked up' primarily due to certain brands of PS2 to PS3 USB adapters being plugged into the system.
So for now, simply do not use these adapters on the new firmware.
To quote: The PS3's 2.70 firmware is causing some havoc out there with reports of bricked systems. They're not bricked, do not reformat.
If you have certain brands of PS2 to PS3 USB adapters plugged into the system on boot you'll get a blank screen, no sound and won't be able to connect your controller (adapter controller AND PS3 wireless controllers).
If you get the firmware update installed fine and then plug in your adapter, you'll lock the system up and have to do a hard reset. The only solution to this issue right now is simple - unplug the adapter and don't use it for now.
We know of two adapters currently (there are likely more) that are causing faux-bricks: TAC and Sumoto.
This is affecting quite a few people that use older controllers/instruments for game such as Guitar Hero and Rock Band so you can bet they'll make enough noise for Sony to hear them. With any luck, it will be a simple fix that they can get out fast to users.