Vista - McAfee QuickClean causes flaw in Complete PC Backup

Hi,
Recently, I was unable to make a Complete PC Backup after several earlier
successful attempts. The backup application could not start due to an
internal error, server execution failed (0x80080005).
Finally today, I could track what was causing the problem: running the
"System Restore Point Cleaner" in McAfee QuickClean of the Security Center
2008!
Only by restoring a complete PC Backup the problem I could overcome the
problem. A system restore by using a restore point did not resolve it, but
instead caused the error "access denied (0x80070005)".
I will notify McAfee of this problem as well.
Thanks

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