Here is the Top 10 external bugs of Flash Runtime in May 2012, which is order by incoming votes in Adobe bug base:
1. Red palette is replaced with Blue
https://bugbase.adobe.com/index.cfm?event=bug&id=3164063
2. Air 3.2 for ICS is not updating the pictured frame for a Video object while seeking when the video is paused
https://bugbase.adobe.com/index.cfm?event=bug&id=3164920
3. StageVideo makes stage opaque to Stage3D
https://bugbase.adobe.com/index.cfm?event=bug&id=3186454
4. Adjusting a NetStream’s soundTransform volume to any value other than 1 makes the sound come in garbled. (fixed!)
https://bugbase.adobe.com/index.cfm?event=bug&id=3154302
5. Mac OSX Player Issue: kernel: IOSurface: buffer allocation size is zero. (fixed!)
https://bugbase.adobe.com/index.cfm?event=bug&id=3077658
6. AIR application crashes at certain point in windows vista connected with Graphics Tablet
https://bugbase.adobe.com/index.cfm?event=bug&id=3162896
7. Webcam is not working with Flash player 11.2.202.228
https://bugbase.adobe.com/index.cfm?event=bug&id=3162441
8. flash-plugin 11.2.202.235 is not in the yum repos (either i386 or x86_64)
https://bugbase.adobe.com/index.cfm?event=bug&id=3185733
9. Netstream.seek() no longer functioning properly
https://bugbase.adobe.com/index.cfm?event=bug&id=3163641
10. FLV Videos not playing on the latest version of the flash player (11.2.202.233 )