Hello rant on. There are times hen every developer both outside application developers and project contributors want to just strangle Google. This might be one of those times.
On Sept 21st a developer blog post was posted on the android blog about using proguard to obfuscate in oreder to use some LVL features. The proguard supplied files had noticeable errors such as not picking up 3rd party libs in the proguard task amnd a poorly deficient proguard config file.
The corrections to the proguard ant task file can be found in the add-proguard-release.xml file in my AndCooperANT project. You can also find a correct proguard config file were log calls are stripped out and stacktraces and lines kept in the form of the proguard_android_config.txt file(drop box download).
To this date almost 30 days and no correction form Google and no acknowledgement of the errors. Come ON Google we have to get better than THIS! Its bug 11413.