This forum is one of the best places for information on the matter. Someone actually posted a copy of the dealership work order where the customer complaint was noted, the transmission was removed and the input seal & the oil soaked clutches were replaced. He's not the first one to have this job done, and he won't be the last.
As far as worrying about it....you might as well not. If the problem starts, just take it to the dealer. If it doesn't, then enjoy the drive.