time to bump this post, what about DotGNU Project (the portable .net), I see that for windows last compile was at end of year 2011 and project is dead BUT does anyone know to which microsoft's versions did this project "parallel"/compete , as in to v2 or 3.5 ? I can confirm it "replaces" 3.5/sp1 in some areas which is wonderful, takes 135 MB on HDD and doesn't throw annoying background running processes or JIT