Smoke on start-up?

[carfanatic]

I own a 2002 Boxster S (26 000km) for the last 3 months.

I love the car so far but am concerned about the excessive amount of smoke on start-up. This is usually after standing for a while, coming back from a spirited spin.
The other day I had to wait for the smoke to clear in order for me to see where the car gaurd was before I could reverse.

I took a photo about mid day showing it on start-up. (16 deg cel) The amount of smoke varies from one start-up to the next.

http://986forum.com/forums/attachment.php?attachmentid=&stc=1

Is this normal? (as some suggest)

I have booked it in to Porsche (under warrantee) to have it checked but would like some neutral opinions.

Any ideas, or am I being paranoid?