My SBS 2003 backup is unable to backup some files - does this matter

I am receiving a report that the following filies cannot be backed up. Are they important and if so, what can I do to resolve the issue.

Unable to open the item C:\Program Files\Symantec\Symantec Endpoint Protection Manager\db\sem5.db - skipped.
Unable to open the item C:\Program Files\Symantec\Symantec Endpoint Protection Manager\db\sem5.log - skipped.
Unable to open the item C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.5884.145625 - skipped.
Unable to open the item C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.5884.145625 - skipped.
Unable to open the item C:\WINDOWS\system32\dhcp\tmp.edb - skipped.
Unable to open the item C:\WINDOWS\system32\wins\winstmp.mdb - skipped.

Any help would be appreciated
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It's odd that they are not being backed up.  THey are not serious though, this can be safely ignored.  

They Symantec and .net 2.0 files would be re-recreated on a re-install and the DHCP and WINS databases would also be re-created when you re-installed your server.

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Jerry SolomonNetwork  AdministratorCommented:
This is very common, and not really anything to worry about.  These are temporary and in-use files.  the reality is that they would simply be recrreated if lost anyway, assuming you don't reinstall Windows before recovering a backup of the C drive, in which case is really really doesn't matter.  At the end of the day, this is harmless.
roy_battyDirectorAuthor Commented:
Thanks for the help
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