Alex Kelly writes:

I have been working on fixing our "Error code: 11" problems, however we also have about the same amount of "Error Code: 4" entries in our debug.log. Does anyone know what that is, and what I can do to clear that one up too? This is a SIGILL (illegal instruction).

Something in your Zope system behaves very badly. Probably it writes uncontrolled into the stack area and hits a function return address. I once tracked down such a problem with "purify". It has been a tedious process because "purify" slowed Zope down by about a factor of about 100... Dieter