Nothing looked like it caused any issues, here are some of the messages from a couple of the logs.
Since it is running now I will keep an eye on it and check the logs for the corresponding day the next time it occurs.
Code:
[Mon Jul 13 13:54:37 2009] [info] mod_convert: init html=/opt/zimbra/keyview/ExportSDK/bin htmlcfg=/opt/zimbra/keyview/ExportSDK/ini/nofrills.ini text=/opt/zimbra/keyview/FilterSDK/bin tmp=/tmp/convert
[Mon Jul 13 13:54:37 2009] [notice] Apache/2.2.8 (Unix) configured -- resuming normal operations
[Sat Jul 18 10:20:19 2009] [info] mod_convert: clean dir=/opt/zimbra/convertd/convert
[Sat Jul 18 10:20:19 2009] [info] mod_convert: clean dir=/tmp/convert
[Sat Jul 18 10:20:19 2009] [info] mod_convert: post= i=299 o=292 fmt=t ms=9