This is a great post by Jon Rose. I know that I was laughing for a bit about reason number two in the facetious list: “You like spending time debugging your Ajax applications in all the different browsers and versions.”
The full post is here: Top 5 Reason’s Adobe Flex and AIR are Not For You
Ran into an issue today where when trying to upgrade and AIR project to Flex 3.3 I kept getting this error:
Luckily the fix is pretty simple. Download the fixlinks.sh script from the link. Copy it to your 3.3 SDK root, make it an executable and run it. You should now be able to run your AIR application with Flex 3.3.
Flex Bug –> http://bugs.adobe.com/jira/browse/SDK-19707
If you don’t want to have the Gumbo Fx Class in Flex 4 then votes for this issue in the Flex Bug and Issue Management System. If you don’t have an account create one and vote. Hopefully Adobe will listen to the community and do what’s right.
The issue can be found here: https://bugs.adobe.com/jira/browse/SDK-17854
I updated an AIR application to compile with SDK 3.2 from 3.1 and ran into the error below:
Process terminated without establishing connection to debugger.
Command:
/Users/dancashman/Applications/Adobe Flex Builder 3
Plug-in/sdks/3.2.0/bin/adl -runtime/Users/dancashman/Applications/Adobe Flex Builder 3
Plug-in/sdks/3.2.0/runtimes/air/mac/Users/dancashman/source/air_app/bin-debug/AIR-app.xml
/Users/dancashman/Cynergy/source/air_app/bin-debugOutput from command: error while loading initial content
I found the quick fix here: nabble.com
Summary:
Update your descriptor file namespace (yourApplication-app.xml)
New Value: <application xmlns=”http://ns.adobe.com/air/application/1.5” >
I’ve just started to play around with Merapi and I feel that it adds a whole new dimension to AIR. The Merapi website describes the project best “Merapi is a bridge between applications written in Java and those
running in and created for Adobe AIR™ (Adobe Integrated Runtime™).” Check it out here, the possibilities are endless! 
MXNA