There were a few content files that were packaged incorrectly and it wasn't discovered until after the CD was burned. I'd assume part of the patch addresses this. That part would be easy to correct right away. Also, sometimes a big bug turns out to be a small piece of code that's easy to fix. Then again, sometimes it's a huge re-write. Hopefully this was the former. P5 was shipped 6 September. The CD burns were probably at least a week before that. CL did admit that they knew of bugs before the CD burn, so we're talking at least a month of code hacking to find the bugs. A wide range of bug reports may have helped narrow down the possible areas for troubleshooting as well. (And some of us did troubleshooting on our own and submitted the results to CL.) My opinion: someone finally commented out the section that says, "set crash = yes"