I am running 2.2 and have no problems at all with the Facebook app. Never once had it go all white.are you running 2.2? you never get the glitch where everything goes white?
Facebook 2.1 just came up on my update page.
I fixed it last night! Give these steps a try, hopefully they work for you too.
(I did all this from the phone, never synced with iTunes on the computer)
1) Delete Facebook App
2) Reset the iPhone (hold sleep button + home button)
3) Re-Download Facebook App
4) Do not open Facebook, Power off your phone
5) Turn the phone back on, open Facebook, login
This is exactly what I did last night, and now it no longer crashes on me when I touch the "Notifications" tab. Good luck!