Several actually. Alas, they produce no core files so no C backtraces.
Slightly interesting parts of the crash message were:
Fatal error (6).
Your files have been auto-saved.
Use `M-x recover-session' to recover them.
[...]
Lisp backtrace follows:
# (condition-case ... . error)
# (catch top-level ...)
That's it. The only other clue I have is that it *may* have be related to
running a function through gnuserve (i.e. "gnuclient -batch -f") but I'm
not
completely certain of that correlation yet.