IBJoel Now that the "undefined" issue appears to be resolved, I suggest that you guys create and run a "find --> delete" script in order to clean house. On the one hand, this is a minor issue in the grand scheme, especially because most of the affected posts will sink into oblivion. But, on the other hand, since no more than ~10,000 posts were presumably tarnished during a short period of time, this isn't an especially resource intensive job, and the script itself is really simple.