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As someone has already pointed out the model numbers correspond to the country they were bought in and countries have various model numbers found on this web page:

http://support.apple.com/kb/HT1937?locale=en_CA

Not at all sure what the model numbers for a given country correspond to but just posting your storage and color probably won't solve much.

OP: fix this or /thread
 
Of those of you with US model numbers:

MB046LL/A
MB048LL/A
MB499LL/A

Are yours fresh out of the box, or were these replacements given to you by Apple because your original ones were defective? I am trying to look at a pattern.
 
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