Flash 10.2 fixed the problem of video tearing of Flash applications under Linux with the move to use OpenGL for displaying. Does Air 2.6 (or will a future version) support the same OpenGL layer and/or is there a config file like the Flash mms.cfg that must be edited to enable hardware acceleration?
Video tearing is a massive issue with full screen applications under Linux and we need a solution now with Air since Flash >= 9 does not allow keyboard input when fullscreened.
I assume you've already found an answer to your question...
Negative. This is still a problem that is very annoying and needs to be fixed. Time doesn't fix bugs, only engineers do.