[ic] Died in server spawn: read: closed

[Grant]

I'm getting messages like this in my global error log every few days:

Died in server spawn: read: closed at
/usr/local/interchange/lib/Vend/Server.pm line 728.

Today a user described what I think was a 500 Internal Server Error
apache2 error page which corresponds to one of these errors.

Does anyone know more about what could be happening or how to track it down?

- Grant