Today, the AIR 3.5 Runtimes and SDK's were updated to address stability and performance issues, in particular the following problems have been addressed:
AIR 220.127.116.110 Runtime for Windows
AIR 18.104.22.1680 Runtime for Macintosh
AIR 22.214.171.1240 SDK for Windows
AIR 126.96.36.1990 SDK for Macintosh
For full details on the 3.5 release, please see our release notes.