I often hear people saying you shouldn\'t rush into adopting new technologies until they have become stable, tried and tested. There is even a joke on how it takes 3 versions to
Mozilla XULRunner.
It was Adobe AIR, before there was AIR. We wrote our Human Resources Management system using it. At the time XULrunner was "just about" to released as the underling engine for FireFox, so we expected that all we would have to do is make sure our users had FireFox installed.
2 years into the project, and right before deployment, a new XULrunner came out that completely broke all of our code, and a Firefox deployment was nowhere in sight. We ended up deploying on our older version with a dedicated desktop installer and have been using it ever since, without the benefit of security or performance updates because we would have to re-write too much code to be compatible. Despite that it has been a very successful project with our customers.
We're now re-writing the app to run on Ext which is the new hot thing for us but seems to have more community support, and offers commercial support if we really get stuck on something.