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Dunno. What happens if you let it install? Are you sure you have installed both security updates for February? 🙂
 
If I install it, I get to install it again tomorrow, and the next day and the next......
 
Fantastic. It's still strange that it's popping up at all though. Have you changed any files in the Receipts folder recently? 🙂
 
Ohh, I wouldn't try to install the same update again, it might mess up the computer. Just ignore it and uncheck Check for updates option in Software Update preference (System Preferences).
 
I wouldn't worry too much about this, but just out of interest, check that there's a file named SecUpd2007-002Ti.pkg in a folder named Receipts within your System's Library. 🙂
 
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