A few weeks ago it started to get hot enough in NJ to run the AC in the truck. A couple of times I noticed that the front passenger floor mat was damp, but I figured that maybe the kids spilled a little water and let it go.
Then on an extended trip in +90º F temperatures, I found the floor soaked, and a small puddle formed in the low spot (about 1/4 inch deep). Since the truck was almost exactly on year old and I wanted to at least have it dealer-serviced once a year, I figured now was the time.
The dealer told me that there's apparently an informational TSB regarding the AC drain hose in certain VIN-range of '07 Pathfinders. The factory-installed hose is too short, and the condensation that forms inside the AC ducts might leak inside the vehicle, causing the problem I experienced. Both the AC drain hose and the passenger-side carpeting and padding gets replaced. There is not a "recall," but the repairs will be performed at no charge under the standard warranty. The parts are not normally dealer-stocked, so it takes a couple days to complete the repairs.
So, if you own an '07 Pathfinder, run the AC for an hour at MAX COOL on a humid day, and then check your floor for dampness. If it's damp, (or worse, soaking wet), make an appointment with your dealer to get the drain hose and carpeting replaced.