I use Liquidsoap from SVN trunk, rev. 8219, with modules. After loading large mp3 file (~ 200 − 300mb = ~ 1h30m − 2h00m) to source and sent source to lastfm.nowplaying function with parameter length=true — Liquidsoap gets down. In Liquidsoap 0.9.3 length check works good. In the log falling info does not appear.