I'm sorry to hear that. Our company recently got acquired, and every 4-6 months the new IT team tries to say, "but do you guys really need Linux? What for?". We answer them, in depth, every time, but then it just comes back up a few months later.

I'm scared one of these days they're just going to force the change on us, all productivity will grind to an absolute halt, deliverables will be missed, and eventually they'll backtrack but only after it's too late to recover the programs that got hosed in the process.