Alpha Channel Artifacts in Air on linux

What we have found is that in the Air playing on Ubuntu there are vertical line artifacts on the edges of alpha channels of images.

The attached image is a series of display objects set on top of one another. they are *starting from the deepest*:

Video (of the belagio fountains)

Image (star in the lower right)

Image (completely alphaed out)

Image (with the text message as seen)

The top two images both have glow filters applied and are the same size but offset by a couple pixels. What you see on the right of the text is a vertical line which is a repeat of part of the display about 70 or so pixels to the left. In a series of grabs this area changes with the content of the video which has confirmed that it is not part of the images themselves. If the two images are aligned and the same size the artifacts go away. If the glow filters are removed the line goes away.

This doesn't happen in Windows or OSX.

Test bed:

Ubuntu version 10.04 lte

Adobe Air 10.3.181

Air Application compiled with sdk 4.1.0.16076