Well to be honest, i'm an experienced Minecraft player and whenever a piston pushes blocks, the piston and the blocks act as if they were transparent blocks so people MIGHT bypass it but it's very unlikely.
Just found this in the update log: 15-Feb-2012 Reverse merged the latest Bukkit into the EMC platform, fixes include: TNT can no longer be used by non-diamond supporters through exploit Splash potions that are damaging can no longer be used on other players (PVP) You can no longer add a slab to stone slabs that are not in your residence Obviously, what was happening to me on my res (see my previous post on this thread) was a known exploit - I never heard about it before I read this, and when it happened to me. Also never heard of the TNT exploit... stuff happens.
