So it's not uncommon for me to experience "Fatal Errors" and subsequent crashing of WoW (Wotlk, Icecrown). But it was quite cool today, as after receiving another one while tanking Halls of Reflection, upon reconnection, I found myself back at the DK starting zone, with all my talents (in my current spec) reset.
I'm planning on taking a look around and then hearthing to Dalaran - hopefully, nothing else got reset, lol.
http://imgur.com/a/0sIc0
