UDPS-110 — The proxy is unable to create a child process
If not configured in SINGLEPROC mode, the proxy consists of several processes:
the regular child (REG) does all the work
the ACR child resolves names in the configuration (if any)
the APR child resolves names and addresses appearing during session
the parent supervizes the children.
If the parent cannot create the child process, the proxy waits for a few seconds and retries forking again.