Not to mention everything that changes with each build that is not even mentioned in the changelog. IIRC GCCRacer use singleplayer so it is not as important to him as to us others to update. We obviously want to get into the servers, and admins don't check if their favourite car looks better or worse with new build before updating...they just update. I guess that explains the "update because...update!" logic Btw I can't imagine that one single car or track looks worse with build 910 that 660 and I can't imagine that any car or track would not work. Multiple rf2 installs works fine. I used to have at least 2-3 builds installed at the same time when I tested unstable builds, and when you have that, one can really tell the differences when jumping between the builds.