Surely they didn't do such well then again Sony is well know to shoot themselves with firmware updates. I'll be happy when some hacking team comes out with custom firmware for the PS3 as they already do for the PSP. I then would be more interested in the PS3.
Judging by all the other problems people have been having with this update I wouldn't risk it. Some people are finding it won't let them connect to the PS online store, online games can't connect, others have found that blu-ray films and dvd's won't play back. But for some it seems to work fine