White/blue smoke at startup is normal for flat/boxer engines - because the pistons are horizontal oil can seep past the piston rings when parked. Typically you will see it if the car was parked for more than a day or two, or if you park it on a hill. It shouldn't be huge amounts of smoke, just a few seconds worth.
-james
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'01 Boxster S, 51k miles
'05 Mazda 6 Grand Touring Wagon
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