The notifications from the Facebook app both in gingerbread and froyo have always been hit and miss for me. Sometimes I will get my notifications, sometimes they will be delayed and sometimes they just won't show up at all. And it's not ROM or even phone specific, the inconsistency is across multiple ROMs and phones.
Congratulations, you scored a 1,000,000 on quadrant. Now how is the actual experience using the device?
I've played the field, and I returned to the best.
Palm Pre Plus --> Motorola Droid --> HTC Incredible --> Droid X --> Samsung Fascinate --> HTC Incredible