In my experience, I have found that the Peacekeepers around the Shattered Sun Staging Area have been slacking off. In fact, my wife's toon was ganked right in front of the building and the so-called Peacekeepers did absolutely nothing. Sensing a bug, my wife wrote a ticket and got a somewhat rude e-mail response saying that -- you guessed it -- it was working as intended. An Alliance guild on my server seemed to be aware of the fact and exploited it to full effect, killing solo players who could seek no refuge under the apathetic -- or even hostile -- Peacekeepers.
According to reports, it's a known bug -- one player even made a video to document it -- but so far Blizzard has turned a blind eye to it. I got a more sympathetic response from my GM who at least mentioned he'd look into the situation. An in-game GM even reset the Peacekeepers in order to see if it would change anything (it didn't). I don't mind gankage... it's part of being on a PvP server. But when an area is supposedly a sanctuary, you don't expect to go through the hassle of a fight. Even worse, you shouldn't have the Peacekeepers tossing your butt around when you're being peaceful yourself. If things keep going the way they are, The Shattered Sun Offensive should probably downsize or hire some more useful temps.