Hi,
I am having the same issue. 10.4.7 with a fresh install. zmcontrol shows all zm processes are running. executing the zmlogprocess command yeilds the following result with no change in the functionality of server stats.
boba:~/libexec zimbra$ ./zmlogprocess
Processing mta entries from 0
Found 0 messages
Deleting processed postfix logs from raw_logs...Done
Processing clamd entries from 0
Found 0 entries
Deleting processed clamd logs from raw_logs...Done
Processing amavis entries from 0
Found 0 entries
Deleting processed amavis logs from raw_logs...Done
Processing sendmail entries from 0
Found 0 entries
Deleting processed sendmail logs from raw_logs...Done
Processing zimbramon entries from 0
Found 0 entries
Deleting processed zimbramon logs from raw_logs...Done
Aggregating hour mta from 2006-09-21 22:00:00 to 2006-09-21 23:00:00
Aggregating day mta from 2006-09-20 00:00:00 to 2006-09-21 00:00:00
Aggregating hour amavis from 2006-09-21 22:00:00 to 2006-09-21 23:00:00
Aggregating day amavis from 2006-09-20 00:00:00 to 2006-09-21 00:00:00
Aggregating hour disk from 2006-09-21 22:00:00 to 2006-09-21 23:00:00
Aggregating day disk from 2006-09-20 00:00:00 to 2006-09-21 00:00:00
RAW: 31
SUM: 730
Pruning raw mta logs from 2006-08-21 00:00:00
Pruning raw amavis logs from 2006-08-21 00:00:00
Pruning raw disk logs from 2006-08-21 00:00:00
Pruning summary mta logs from 2004-09-21 00:00:00
Pruning summary amavis logs from 2004-09-21 00:00:00
Pruning summary disk logs from 2004-09-21 00:00:00
Pruning other raw logs from 2006-08-21 00:00:00  |