Jason, "ulimit -a" reports the current limits in effect for that
shell, right now. You gave ulimit output for a root shell, which
may or may not have any relevance at all. You need to know what if
any limits are configured for the shell that starts the AOLserver
process. Also, AFAICT you do not yet know whether or not "AOLserver
crashed itself" - that one of the things you're trying to figure out.