This may have been mentioned before here but it was a new angle for me and thought others (especially new car owners may find it interesting). Just read a possible explanation for the RMS. Basically, it states the root may be extensive "short hop" driving during the break in period:
http://townhall-talk.edmunds.com/WebX?14@@.ef37f9b/950!keywords=allin%3Amsgtext%20boxster
"Regarding RMS and break in, I can only tell you that my sales manager (who formerly worked at Porsche headquarters and seems to have a lot of technical/engineering knowledge) gave me that advice. He indicated that a high percentage of the RMS issues they had on 996's (and Boxsters) could be traced to a lot of short hop driving during break in. The typical story is Dr. X. buys a new 911, lives 5 minutes from Johns Hopkins but just can't resist driving the car back and forth from work, day after day, during what should be the break-in period. The engine, oil and seals never get a chance to fully warm up and expand, then cool down and seal/seat. A year or two later, bingo, RMS leak. "