Thanks to you guys pointing me to Kia Global Information System (KGIS)
, I was able to see that as of August 2010 the most up-to-date navigation map was version 3.07.06
... because my Sorento SX was manufactured in September 2010, I was almost sure that it was up to date, but for kicks I checked it out... it wasn't even close! My version is 2.0X.XX!!!
So check your nav systems, folks! To check yours, click where it says "Setup," then tap "System Info." It'll bring up the cool graphic with all of the satellites and show you what version you are running. We're taking our Sorento into the dealer tomorrow to have it updated.
BTW -- the technical service bulletin number for this update is SA 060.