Nowadays all the DDR2 800 are JEDEC aprooved. The only knowed problem is with the Asus M2N series and OCZ memory.
I agree that all JEDEC approved ram should run but just because it is JEDEC approved doesn't mean you won't run into problems when instsalling in a new mobo. I've read on this forum where users have needed to borrow or purchase 1.8v ram for the system to post then could pump up the ram voltage to stick in the new ram. In those instances it is true that it will run but is a pain in the a$$. Some mobos won't let you adjust the voltages as in my Intel DP965LT. I knew this before I got this board so no problems.
Yeah I know that (from the other thread lol), thats why I only recommend motherboards that dont have general compatbility problems and that allow vDIMM changes.
Still youve got a point and you should research if youve got doubt about the compatibility among your mobo and memory.