Noticed something today under the engine, kind of oily smudge at two places, quite dry to the touch and I didn't notice any oil drips in the garage.

Shoud I get it checked out or is this normal oil sweating?

I still have porsche approved warranty for a couple of months left... could perhaps get it fixed if necessary.

Here are some pictures (997.1 MY2008):

 

Nope....That is not normal ...and you have some slight leaking....Since you have a warranty....definitely take it in and get it checked/fixed.

Good luck.
DC

 

Thanks, will get it checked.