classified stand alone system - clearance issues.

i;m tasked to prep my site for a DOD audit/ inspection.  
i've tacked most  of the issued  (the 560  hits) or at least have a certifiable reason for its appearance.

But i'm trying to  revolve the last 2  and was hoping that one more experienced than i could help.

issue1  -  when day light saving (04.02.06)  rolled aroung  the setting that should have updated the systems clock  did not.  will a battery resolve this?

issue2 - the cpu  's  are ser up with the FSO as the administrator  ,  and then power users, and users
the power user is given right to take logs,  but i'd want to ensure there no user error  in the log taking.

how can i disable the power user from clearing the log file?
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Here's a response to Issue 2.

What OS is running on the machine? If you look in Group Policy, you'll want to look at Manage Audit and Security Log.

Local Computer Policy > Computer Configuration > Windows Settings > Local Policies > User Rights Assignments

Here's a site that might also help:

As for issue one, what Time Zone do you have set? Also, does this affect you?

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