This app runs OK with Fedora Core 2. There are minor annoyances that show up as error message pop up windows when you open a form or go to another page in a form. Just click "OK" until all the errors go away and continue your work. The forms will save just fine once the forms are filled out and you can email them or print them just fine etc.
A friend of mine at work has installed the ICS Viewer on Mandriva and reports it works there as well. He doesn't get the error windows like I do though. I wonder why???
Good luck!
Ben