For some reason apache2 died this morning at 3:10am, error log shows as follows
[Wed Jun 13 03:10:02 2007] [notice] Graceful restart requested, doing restart
[Wed Jun 13 03:10:03 2007] [notice] Digest: generating secret for digest authentication ...
[Wed Jun 13 03:10:03 2007] [notice] Digest: done
[Wed Jun 13 03:10:03 2007] [notice] Apache configured -- resuming normal operations
[Wed Jun 13 03:10:03 2007] [notice] Graceful restart requested, doing restart
[Wed Jun 13 03:10:03 2007] [notice] Digest: generating secret for digest authentication ...
[Wed Jun 13 03:10:03 2007] [notice] Digest: done
[Wed Jun 13 03:10:04 2007] [notice] Apache configured -- resuming normal operations
[Wed Jun 13 03:10:04 2007] [notice] Graceful restart requested, doing restart
[Wed Jun 13 03:10:04 2007] [notice] Digest: generating secret for digest authentication ...
[Wed Jun 13 03:10:05 2007] [crit] (4)Interrupted system call: Digest: error generating secret: Interrupted system call
Configuration Failed
Dunno.