Whatever the reason for flagging was, there is a five-minute delay to pulling down your PvP flag, after which you will return to normal PvE mode without fear of those of the opposite faction. The exception is FFA flag which is removed in just a few seconds.

Your flag timer continues to run even if you die (although getting ganked counts as PvP activity, and resets it to five minutes), so if you're tricked into turning on your PvP (or otherwise engage in PvP combat with the other faction) in friendly territory, and die, you can wait the five minutes while dead, so you can resurrect without your PvP flag up.

Other solutions include taking a ride on a flight path (on PvP servers this must be a flight to friendly territory), or entering a sanctuary. Doing so will also automatically remove the PvP flag if it is up.

http://www.ownedcore...g-yourself.html

http://www.ehow.com/...d-warcraft.html

You will sometimes get flagged for being attacked by a horde guard.

And yes, now, the guards attacking flag me *even if they don't even come into range to hit me.

BTW, someone on the WoW general forums suggests that this isn't a change, but rather, that there have always been some guards which flagged you if they attacked you, rather than if you attacked them. So it may just be that I have to avoid holiday quests that involve other towns.

http://eu.battle.net...pic/13987369762

Maybe you ran past a horde camp. You will be auto flagged for pvp if you go near the opposing factions guards.