See if what's on this issue ticket applies to you.
http://www.virtualmin.com/index.php?option=com_flyspray&do=details&task_id=4607

I am still watching my stats, it is currently working right, but then... sometimes they work for a few days then stop, so I'll call it solved once I see it working for a while :-)

Hi. I'm pretty sure my problem is almost the same. Log rotation occurs, then no logs for a period, then I get some days of logs, then gone again.
I also was thinking that apache restarting may be the problem. I am currently tinkering with the sleep command in the hope it will give things time to settle for apache restarting.
I'm kind'a clutching at straws to be honest. I'll see how this works out, and get back to you. I will also try what is suggested in the ticket you linked to. Thanks.

I shall call mine solved once I get > 7 days of logs. I'm on weekly rotations.

Regards Terry.

since adding the sleep commands, I've had unbroken logs for 6 days now. I think that's a record for me. :-)
Hopefully after a couple more days I'll be happy to call it fixed.
Fingers crossed.

Regards Terry.

Hi Sciallo. How's your stats. I now have 11 days of uninterrupted stats. I think the sleep command fixed mine. It's the longest period I've had with no gaps. :-)

They've been working since.

All I did is change the logrotate configurations to use `/etc/init.d/apache2 restart` to restart apache after rotation.