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Update needed everytime i restart my Mac Book Pro

After upgrading to Yosemite, everytime i restart my mac, a gray screen appers with an unknown user and the message "update needed'. It will ask me to introduce my password to proceed.


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Then it will take several minute to login

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Model Name:MacBook Pro

Model Identifier:MacBookPro9,1

Processor Name:Intel Core i7

Processor Speed:2.6 GHz

Number of Processors:1

Total Number of Cores:4

L2 Cache (per Core):256 KB

L3 Cache:6 MB

Memory:16 GB

Boot ROM Version:MBP91.00D3.B08

SMC Version (system):2.1f175

MacBook Pro, OS X Yosemite (10.10)

Posted on Oct 18, 2014 7:54 PM

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Update needed everytime i restart my Mac Book Pro

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