BTW what is this 'banter bug' everyone talks about?
A fair number of people have a bug which means that banter (companions talking to each other while out questing) either doesn't fire at all or rarely does, which means the entire game is played in silence (especially since, in some cases, it seems to be related to ambient music not playing, either).
People with this bug, therefore, miss out on a fair chunk of the game's interactions with their companions (there's about 6 hours' worth of recorded all up, so it's actually unlikely people will hear all the banter in a single game even if it's working), as well as some side stories (such as inter-companion romances beginning--there are 2 that only start if they go through a banter series first) not firing.
It also may affect at-Skyhold random banter between advisors via the people that are sometimes in their offices (Josie and Cullen, specifically) that give a bit more insight into their characters.
Understandably, this is annoying for those affected.
There's an entire thread about it in this section, if you're interested in reading more.
http://forum.bioware...8-party-banter/