Thanks Steve, that puts my mind at rest.

Cheers,
Robert

On Sun, 25 Jun, 2006, at 16:23, "Steve Garman" <[EMAIL PROTECTED]> wrote:

Because modern operating systems can stay running for so long, it's
possible for the machine's internal counters roll over....
you may encounter a case where it appears that the stop time is prior to the start time.

I don't know what OS counters the Ticks functions use but if on windows
they use the GetTickCount function, that rolls over every 49.7 days

<http://msdn.microsoft.com/library/default.asp?url=3d/library/en-us/ wce=
coreos5/html/wce50lrfGetTickCount.asp>

Apart from checking for a negative time increase, I don't worry about =
it
much.
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