This is where I was leaning as soon as I was able to get the error output of my crashes.

Tomorrow, in hopes of repro-ing in a more consistent way, I'm going to throw together a perl script that spawns off a bunch of children that continuously write to the db simultaneously to try to force the same crash, then I'll play around with locking code, and test it with this mentioned setup.

I'll post back on this thread with what I find, and how I get around to possibly solving it.