Hi All

We put a new server in to a customer about 2 months ago. The server has run with out a hitch until the last couple of days (Release 8.0.3.GA.5664.UBUNTU10.64 UBUNTU10_64 FOSS edition.)

Every day the web front end seems to stop responding, inside the zimbra logs we see

Jul 30 09:04:22 server16 slapd[1034]: slap_queue_csn: queing 0x7f10d1cf51a0 20130730080422.447191Z#000000#000#000000
Jul 30 09:04:22 server16 slapd[1034]: slap_graduate_commit_csn: removing 0x5f98570 20130730080422.447191Z#000000#000#000000
Jul 30 09:04:25 server16 slapd[1034]: slap_queue_csn: queing 0x7f10d04f21a0 20130730080425.732083Z#000000#000#000000
Jul 30 09:04:25 server16 slapd[1034]: slap_graduate_commit_csn: removing 0x33aecc0 20130730080425.732083Z#000000#000#000000
Jul 30 09:04:25 server16 slapd[1034]: slap_queue_csn: queing 0x7f10d04f21a0 20130730080425.787335Z#000000#000#000000
Jul 30 09:04:25 server16 slapd[1034]: slap_graduate_commit_csn: removing 0x5f98ab0 20130730080425.787335Z#000000#000#000000

If we try to restart the server we see

Starting ldap...Done.
Unable to determine enabled services from ldap.
Enabled services read from cache. Service list may be inaccurate.
Starting logger...Done.
Starting mailbox...Done.
Starting antispam...Done.
Starting antivirus...Done.
Starting snmp...Done.
Starting spell...Done.
Starting mta...Done.
Starting stats...Done.

To get it all up and running again we need to do a full server reboot. No setting have been changed, no new mailbox or domain etc

Anyone got any ideas here please

Thanks

Glenn