[Zope-dev] Zope 2.2.4 Dying

Hi, since the last time i had some problems with my zope server. The zope 2.2.4 running under linux dies unexpectly with the following messages. 2001-02-16T01:50:08 ERROR(200) zdaemon zdaemon: Fri Feb 16 02:50:08 2001: Aiieee! 5451 exited with error code: 13 ------ 2001-02-16T02:29:38 ERROR(200) zdaemon zdaemon: Fri Feb 16 03:29:38 2001: Aiieee! 10313 exited with error code: 13 What does the error code 13 say and could anyone help me to solve the problem as