Russ, No need to top off yet.....like I said the smell was very faint(and I have not smelled anything since thursday morning). I did see just a very small anount of white residue around the hose from the evap tanks line where it goes into the rad by the upper rad hose.....but I think that is the norm....or has been on my car.
Thanks for the tip.....I do know the weak spots of these Volvo rads(mounting brackets, side tanks, etc), and I am super careful when I pull into a parking spot not to hit the bumper stop.
Anyhow....its under warranty for another year/12K mi.....and then I have the VIP comprehensive new car extended out to 70K or 6 years, so the fix will not cost me all that much if it does develop a "real" leak.

thanks guys.....
--
Steve F. in Hoboken, NJ