When I had Parallels 3 build 5584 I installed the latest version of MacFuse (1.5.1), recently I upgraded Parallels to build 5600, I noticied that in the package contents it comes with MacFuse 1.3.1 (I assume it's because 1.5.1 hasn't been sufficiently tested, since it has only been out for less than two weeks). When I upgraded Parallels it downgraded just my fuse.fs file, none of the other files MacFuse installs where touched, I then proceeded to reinstall MacFuse 1.5.1, and it's been working fine. My question to the Parallels Team is, is MacFuse 1.5.1 unrecommended with build 5600 (or is it just not sufficiently tested)? Should I downgrade my MacFuse installation to the one build 5600 comes with? I know you can't recommend something that you haven't tested sufficiently, what I want to know is if there are strong reasons, known issues that should make me downgrade MacFuse. By the way, thank you for releasing the new 5600 build that targets XP SP3 and Vista SP1, I criticized you for not releasing a build that would address these SPs before their public release, but now that you made the effort and release it I have to thank you.