[nathanb]

Can someone explain this to me?

Windows version: x64

Mac OSX version: x64

Linux version: x86

Why? Why do companies not release 64-bit versions of their programs for Linux? This seems to happen all the time, and it utterly baffles me.

[babuskov]

Most probably the developers working on Linux port run 32 bit Linux themselves because of compatibility with some closed-source programs. ;)

I have no idea about the real reason, it's just a wild guess.

[Already__Taken]

Windows server is x64 only. Might as well knock that support off the list at the same time. OSX is 64 only right?

x86 only linux just halved your compile and packaging times. Only answer I can assume.