Well, I see how it has broken it. But, I wasn't using the links for macros. I was using it for performance and disk space.

Each WoW install is about 30GB. x6 is a lot of disk space. And, if each client is effectively reading the same data from disk and cache it is MUCH faster then if each is reading a separate files.

Is it just Data that is broke? Can I still share my cache? Is there a way around this at all?