The "Correct lyrics"-action is working very slow for me, doing only about 1 song per second. CPU usage is mostly below 20%. Most of the songs don't even have lyrics stored (the ID3 field should be either empty or more likely non-existant).
I was wondering what could be making this so time-consuming?
Probably the lyrics server was overloaded. Whether or not a lyric is retrieved is immaterial most of the time spent is on connecting to the sever and looking for the lyrics in the first place.