not to be rude, but how many Facebook contacts do you have? I have a theory mine isn't working because of the fact that i have like 1k plus. it never had a problem on 1.5 tho...
I believe I've figured out the problem with Facebook for HTC Sense. And why some peoples' works, and some doesn't.
so I have to discredit HTC for not having 2.1's integrated Facebook for HTC Sense app REQUEST AUTHORIZATION from Facebook to work properly. If you didn't already have HTC Sense as 'Authorized' in your Applications (Account > Application something when you're on Facebook full), your contacts won't sync, you won't be able to Link any contacts, and you won't be able to update your status.
HTC Sense for 1.5 requested authorization. So those who already had authorization for 1.5 and didn't have it disappear (like my gf) had Facebook Syncing work. Those who didn't have it disappear find that Facebook for HTC Sense works great.
What's the fix? Well, I'm on 1.5, and my gf's on 2.1 (she's having the problem). I'm going to try, today, to log into the integrated Facebook syncing with my 1.5 phone with my GIRLFRIEND'S login, just to authorize HTC Sense on her Facebook account, then log in back on mine on my phone, and HER login on her 2.1 phone, to see if it syncs.
I'm betting on success here.
Does anyone here who ISN'T getting facebook syncing to work, seeing 'HTC Sense' under their Authorized apps on Facebook.com?
I will post my findings, as a "Fix" if this works.