Yeah I personally got burned out after my RAF session to get all my teams to 60, I think I ended up taking a few weeks off and it helped quite a bit. My stopping point was my DK's at 67.5 as well. I just recently got on them and jammed out the last 1/2 level and got them to Northrend. Even though I just got my Pallies up to 80, now I'm feeling like leveling up my Shamans.

Breaks are good.....makes the game seem like less "work"