So here's where you come in. Do you have an app you'd like me to try? Leave a comment and I''ll try it. You might also want to include a link to where I can find it; some apps are only hosted on their n project pages and there's no guarantee that I know where that is.
I'm not expecting any serious issue, but remember, the Kindle Fire runs on a branched version of Android v2.3 Gingerbread. Amazon may have tweaked something that breaks specific apps. It wouldn't be the first time that a problem is only revealed by a specific app; my hacked Sony Reader Wifi still won't run some games no matter what I do with it.