More on the infamous "M"
It seems to occur only with linear dimensions locating threaded holes (probably Joshposh's original complaint). Moving to sp 0.1 does not change or fix it.
SW2005 sp0
When I make a drawing (part files were generated using mm units - if that matters), I get a linear dimension with "M" as a prefix in front of the number. These are driving dimensions, it does not do this with dimesions with diameter symbol or an "R" prefix.
BTW it does not matter...