I sent this as a PM, but I don't think Badspot reads all of the PMs he gets sent:
A while back, Ladios was explaining a problem where he saw a bunch of bricks get destroyed, but they still had collision. Now, I'm in a server, and I'm experiencing the same thing. I tried rejoining, and I saw the build. About 2 minutes later, it was destroyed. No one else was noticing it aside from me, and I could still walk on it, while having a very jittery walk.
Note: StarHawk's Server