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NAV 12.3: Auto protect off on OS X 10.8.1
I use a MacBook Pro with MacOS X 10.8.1 and NAV 12.3 (71).
Auto protect is sometimes off.
When I switch on I become the message "AntiVirus Auto-Protect could not load the scan engine. Please run LiveUpdate to get the latest version" too.
I try the hint with terminal and delete symantec.keychain. This works until I restart the MacBook.
Then I have the problem again.