How to determine if the system clock has been set back in time

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From: David Lindgren (david.lindgren_at_hogia.se.REMOVE!)
Date: 02/24/04 

Date: Tue, 24 Feb 2004 08:57:50 +0100

Hello.

I am trying to figure out a way to determine if the user has resetted the
system clock between two times of running my application. One idea I have is
that I could check the modified date of a system file which I "know" is
changed regulary (every day) and compare that to the current time. If the
modified date is later than current time the system clock has probably been
reset.
Is this a good way to find out about user resetting the clock or are there
other (better) ways to do this? Also, anyone have a good idea of which file
I could look at when comparing time?

Thank you for helping out.

/David.

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