This is to do with the water drain on the inside of the Passanger wing, this gets blocked so the water comes into the car, push a long stick down the open and clear the blockage and will be fine after that, had the same issue my self, been fine since i Cleared it!
Matt, April 2011
most probably the heater/water matrix leaking as its a common problem apparently,,but i'm new to having a laguna myself and scoured the net for common faults etc before buying,,,hope that helps...
