When i took a potion (while in combat) right after the new patch was applied i noticed this little debuff
http://img530.imageshack.us/my.php?i...tdebuffuq3.jpg
Potion sickness
Unable to consume potions until you rest out of combat for a short duration
You keep this debuff until you are out of combat, taking a pot does still trigger a 2 min cd tho.