Last night I finished a dungeon, but ran out of inventory space, so called my trusty banker to offload some gear and pick up some new loot from the end of the dungeon - and the game extracted me before I had time to pick up a nice purple drop!
I ran a new character through Darkshade Cavern's the other day. Experienced players always skip that Dwarven miniboss at the exit and go to the final boss and then drop group when done. I found myself in the boss area with just 20 seconds or what ever it is to run to the exit to turn in the quest and bam, miniboss all over me. Luckily one of the other group members had not left yet and fought him off just long enough that I could turn in the quest with 1 second to spare.