A stupid bug is causing all my characters to end up using the same voice pack, whether it is my older characters or new ones I create. My first character I created used Damian O'Hare's voice, later I created a second character using Richie Campbell's voice pack and upon switching back to my first character, he was using Richie's voicepack as well.
Any new character I create, no matter what voice pack I choose will start using Richie's voice the moment I log out and log back in. So no matter what all my characters now sound the same