[Dovecot] Time jumped forwards

[Ian B]

Running Dovecot 2.0.8 on 32bit Centos5.5. The machine is a VMWare ESX VM.

I'm seeing a lot of warning messages in syslog as follows:

2011-01-14T11:45:37.315917+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 105 seconds
2011-01-14T11:46:00.598006+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds
2011-01-14T11:46:25.364405+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 105 seconds
2011-01-14T11:46:27.030658+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds
2011-01-14T11:46:49.712202+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds
2011-01-14T11:48:07.600748+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds
2011-01-14T11:48:23.195587+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds
2011-01-14T11:48:37.342804+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds
2011-01-14T11:48:42.671037+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds
2011-01-14T11:48:45.903081+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 105 seconds
2011-01-14T11:48:49.001119+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 105 seconds
2011-01-14T11:48:58.935835+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 105 seconds
2011-01-14T11:49:15.046253+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 104 seconds
2011-01-14T11:49:16.842962+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds

I've checked the clock settings in Centos and it all looks OK. NTP is running and not complaining about clock drift. Vmware recommend appending 'divider=10 clocksource=acpi_pm' kernel boot options to prevent timekeeping issues, which I've done.

Has anyone else encountered this message? Is it something to be concerned about?

Thanks,
Ian.