Just received today Pink Floyd's Dark Side of the Moon 30th Anniversary Edition on LP...
I remember my older brother getting the original LP in the early 70's (1973?) and I remember my Dad yelling at him for putting all the stickers on his bedroom door (solid maple!).
My math says 1973 + 30 years = 2003... This is a remaster of the 2003 version for 2009 / 2010???
The 30th anniversary LP and SACD came out in 2003. Your math is perfect. :)
Wikipedia link about the reissue (http://en.wikipedia.org/wiki/The_Dark_Side_of_the_Moon#Reissues_and_remastering)