I'm about 3/4 the way through Freedom, and find it (mostly) intruiging thus far.
Namo and Stockard - the switching of the narrators things only happens that one time for about 70 pages, because the character Patty is writing her autobiography to her therapist. After we read her whole book, it goes back to Franzen as narrator, and that diary plays a part later on in the book.
I suggest giving it another chance. I'm really enjoying Franzen's writing style.
"I'm an American, Damnit!!! And if it's three things I don't believe in, it's quitting and math."