I really can't tell if this is a serious thread, but I'll still post my issues I've experienced. I'm on the PS3 version.
The only two things are:
1. When you have Friends selected as your default leaderboard, in quickplay it will just show my scores, and not my friends' scores.
2. Also in quickplay, I cannot use the blue fret to switch between guitar scores and bass scores as it says I can. I'm playing on a GHWT guitar, but that shouldn't make a difference as all the other menu functions (such as the yellow fret goes to the next category) all work.