Pro Tools HD, LE, and M-Powered versions 7.0 and 7.1 are now officially qualified on both Mac OS X 10.4.4 and 10.4.5.
Pro Tools M-Powered versions 7.0 and 7.1 are now officially qualified on Mac OS X 10.4.4.*
Digidesign Compatibility Documents:
www.digidesign.com/compato
*Although there are currently no known issues, official qualification of Mac OS X 10.4.5 with Pro Tools M-Powered is still in progress.