Skipping tags and lyrics
I hate to do this, but apparently there is and has been a bug in beaTunes 2.1 that can lead to beaTunes skipping some analysis steps when using Use Online Resources. Under certain circumstances, plugins like the Last.FM plugin may simply be skipped. The workaround is obviously to turn Use Online Resources off, when using said plugin. I promise this issue will be fixed in the next update. For those of you, who need a solution right now - fell free to use this 2.1.2 dev snapshot for OS X.