I'm seeing problems using Amazon MP3 to play music from the cloud drive - when I select a song, it starts to load then never actually plays. Just sits there loading, loading, loading... Not sure if it would play music stored on the SD card, as I don't presently have any there.
Also have issues, as I believe others have reported, with Gentle Alarm and Weatherbug Elite, both obtained as free apps of the day from the Amazon App Store, requiring re-installs after each reboot. Otherwise, trying to run them results in the "unknown error" from the Amazon App store.
Finally, I had a problem trying to play music from the Google Music beta "cloud". I would get to the point of selecting my song, but then the app would force close.
I can't tell you how many uninstalls, reinstalls, wipes, reconfigs, wifi instead of 3G, 3G instead of wifi, etc. I've tried, and I also tried turning off the Liberty option to zip align on boot (and uninstalled and re-installed the apps) with no success.
Other than these annoyances, I found 0.6 to be nice and fast. However, I use my phone docked in the media dock and in the car, and need these things to function, so I'm currently back to rooted stock 569.
Any suggestions are appreciated.