Noticed that beatbox seamed to snap out of its sluggishness after being idle for some time (hours), and I was able to scroll through the listview. So I exited and restarted and again its unresponsive. I should also mention that cpu load averages around 96%. Can't remember the figure for earlier builds of beatbox but it certainly wasn't as high as that.

Here's my output when running beatbox from terminal:

[_LOG_LEVEL_INFO 20:32:25.301023] Application.vala:77: BeatBox version: 0.7
[_LOG_LEVEL_INFO 20:32:25.301085] Application.vala:79: Kernel version: 3.5.0-19-generic
[_LOG_LEVEL_INFO 20:32:25.526045] Info.vala:83: Loading info from database...
[_LOG_LEVEL_INFO 20:32:25.631854] SongLibrary.vala:72: Loading songs...
[_LOG_LEVEL_INFO 20:32:28.201027] PodcastLibrary.vala:72: Loading podcasts...
[_LOG_LEVEL_INFO 20:32:28.201360] StationLibrary.vala:57: Loading stations...
[_LOG_LEVEL_INFO 20:32:28.218161] PlaylistManager.vala:42: Loading playlists from database...
[_LOG_LEVEL_INFO 20:32:28.253482] LibraryWindow.vala:172: Building user interface
[_LOG_LEVEL_WARN 20:32:28.308055] [Gtk] Theme parsing error: <unknown>:57:17: Not using units is deprecated. Assuming 'px'.
[_LOG_LEVEL_WARN 20:32:28.308124] [Gtk] Theme parsing error: <unknown>:57:19: Not using units is deprecated. Assuming 'px'.
[_LOG_LEVEL_WARN 20:32:28.308799] [Gtk] Theme parsing error: <unknown>:34:17: Not using units is deprecated. Assuming 'px'.
[_LOG_LEVEL_WARN 20:32:28.308853] [Gtk] Theme parsing error: <unknown>:34:19: Not using units is deprecated. Assuming 'px'.
[_LOG_LEVEL_WARN 20:32:28.325241] [Gtk] Theme parsing error: <unknown>:34:17: Not using units is deprecated. Assuming 'px'.
[_LOG_LEVEL_WARN 20:32:28.325306] [Gtk] Theme parsing error: <unknown>:34:19: Not using units is deprecated. Assuming 'px'.
[_LOG_LEVEL_WARN 20:32:28.414279] MusicSourceView.vala:46: TODO: Fixme
[_LOG_LEVEL_INFO 20:32:32.119159] AZLyricsPlugin.vala:38: AZLyrics Source loaded
[_LOG_LEVEL_INFO 20:32:32.119214] LastFMInfoPlugin.vala:38: Last.fm Info Source loaded
[_LOG_LEVEL_WARN 20:32:35.546581] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_WARN 20:32:46.998062] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_WARN 20:32:46.998172] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_WARN 20:32:46.998494] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_WARN 20:32:46.998586] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_WARN 20:32:47.084473] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_WARN 20:32:47.106887] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_WARN 20:32:47.189822] [Gtk] Failed to set text from markup due to error parsing markup: Fel på rad 1: Entitetsnamnet "uuml" är okänt
[_LOG_LEVEL_INFO 20:33:23.982074] CoverManager.vala:302: Album art cached in memory.