When I just blew ALL my cooldowns on my mage (Health Pot/Mana Stone/Evoc was on CD/POM+AP on CD) and had bearly made it out of a fight with a bunch of mobs (10+) alive (around 30% health and under 10% mana) when a ****ing lvl 53 rogue pops up behind me and ****ing killed me.
Granted, I went back and camped him all the way back to the spirit rez, and continuted to camp him for about an hour until a few lvl 70's showed up and I went about my own business. But still. I don't think I've ever been that pissed at a game before in my life, because you KNOW that ****ing rogue was bragging about that shit for weeks.