I'm currently in my first nix job after years with Windows. It's a larger company (15k+ people) and using RedHat for it's linux solution (solaris/aix is also present). Honestly, I don't understand the $$$ argument at the enterprise level against msoft. Not only are you paying Redhat for support but their RPMs are about a year behind what's out there (that's a lot of time!). I'm trying to get .net (coreclr) compiled now on RHEL to play around but having a heck of a time b/c of all the old packages (btw- if anyone has instructions for this, __PLEASE__ send along).
Are other nix shops using Ubuntu for their servers?