#0 - Dec. 4, 2008, 8:44 p.m.
We changed how the game handles debuffs (i.e. negative state effects on targets) on creatures with Wrath of the Lich King. The old hard cap of 40 debuffs on a target no longer effectively exists. You can now apply way more debuffs to a target without them dropping off before their duration expires. The default WoW UI will not normally display all these debuffs, but they really are still there!
