I've updated to 2.52 and have no problems with Fallout 3 so far.

Anyone noticed that the PS3 has gotten... "slower" after 2.7?

First, comparing trophies with a friend has definitely gotten slower. Okay, its arguable as currently streamyx is F'd. So will have to wait until after their so called "April 5th" for them to fix their connection up.

Second, after logging into PSN, your friend list will start to load. As it is loading, after stuff you do like viewing your games tend to a slight bit longer to load as well. I went into the PSN store directly after logging into PSN yesterday, and it took me nearly half a minute to enter. Before, it only took about 10 seconds max.

Usually, even with crappy connection before you could do things rather simultaneously without any longer wait. But after the firmware, seems like things gotten a little bit slower than before.