I've used IA's products since before Ignition was Ignition. I've used it on Windows and Linux. It's very powerful software. The flip side of that coin is that, the more powerful a package is, the more interesting ways you can hose yourself over.
Happily, there's a strong community on their forums (like we have here, with users from a wide variety of experiences (like we have here) who are willing to help others out (like we do here).