Adobe AIR (Adobe Integrated Runtime) 1.5 was released last December. While not a 64 bit app yet, it is very easy to get the AIR 1.5 working on Ubuntu 8.10 AMD64 version.

1. Install needed libraries

sudo apt-get install ia32-libs

2. Download the installer

wget -c http://airdownload.adobe.com/air/lin/download/1.5/AdobeAIRInstaller.bin

3. Install AIR

./AdobeAIRInstaller.bin

(note may need to

chmod +x AdobeAIRInstaller.bin

)

4. Copy extra Adobe library file

sudo cp /usr/lib/libadobecertstore.so /usr/lib32

5. Install AIR apps via web.

Origin: http://www.mikesplanet.net/2009/01/installing-adobe-air-15-on-ubuntu-810-x86_64/