No luck here for the GPS!
I reverted to an official SFR Rom backup > GPS worked fine > wiped cache/data > re-installed CM 10.1 from scratch and still no GPS..
I have juste done the same with CM 10 but same result, the only thing is that in CM 10, the source option appear in settings, but quite useless since I can only select "internal"
Edit: Okay, the third attempt, the good one! I did the same as above with CM 10.1, but this time I only wiped data and now the GPS fixes indoors!