1998 Beetle - Oil Drips When Running

[pointyskull]

We have a 98 Beetle, and yesterday I noticed it was dripping oil (very small drips) when running - after leaving it warm up in our driveway due the extremely cold weather. There was approximately a 5" or 6" stain on the driveway that I became aware of later in the day, and when I moved the car back a few feet I again ran it and after a few minutes small drops of oil began to drip again.

What are the odds it's something minor - related to the cold weather?
What are the possibilities I can anticipate?

thx

[hako]

Dunno about the cold weather as it never gets below 10 deg Centigrade here but most times oil leaks which are unexpected come from the oil filter leaking - sometime over or undertightened.