UBB.classic 6.7.1

Hi,
I've searched on this topic - but the only answers I found were about high usage boards.

Since a server change (but same hosts) a few weeks ago - my recent visitors number has been resetting regularly.

Is it possible that a simple 'permissions' problem is the problem here? Or perhaps something more sinister <img src="https://www.ubbcentral.com/boards/images/graemlins/confused.gif" alt="" />

As everything was working ok until two weeks ago - I'd rather look for the easier answer.

Daily average < 2000 visits -- I think beacuse mostly intranets visit --
approx 12000 pages per day
Thanks,
d.