I'm using rhythmbox 0.9.3.1 from Ubuntu Dapper.

I can't drag and drop some tracks from the rhythmbox browser into a new playlist.

rhythmbox -d produces this output:

[0x8123890] [rb_tree_dnd_motion_notify_event_cb] rb-tree-dnd.c:588 (19:35:45): drag begin
[0x8123890] [set_context_data] rb-tree-dnd.c:352 (19:35:45): Setting path_list: index=138650656
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:45): drag and drop motion: (123,318)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:45): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:45): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (80,310)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (76,309)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (74,309)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (72,309)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (69,308)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (67,307)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (65,306)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (63,305)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (62,305)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (62,304)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:677 (19:35:46): Setting up a new select on drag timeout
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (61,304)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (60,303)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (59,303)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (58,302)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (56,300)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (55,300)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (54,299)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (53,299)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (49,296)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (47,296)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (46,295)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (45,295)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (44,295)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (43,295)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (43,294)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_tree_dnd_drag_motion_cb] rb-tree-dnd.c:619 (19:35:46): drag and drop motion: (42,294)
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [remove_select_on_drag_timeout] rb-tree-dnd.c:497 (19:35:46): Removing the select on drag timeout
[0x8123890] [rhythmdb_query_model_drag_data_get] rhythmdb-query-model.c:1403 (19:35:46): getting drag data
[0x8123890] [rb_sourcelist_model_row_drop_position] rb-sourcelist-model.c:404 (19:35:46): text/uri-list type
[0x8123890] [filter_drop_position] rb-tree-dnd.c:386 (19:35:46): filtered drop position: TRUE
[0x8123890] [rb_sourcelist_model_drag_data_received] rb-sourcelist-model.c:250 (19:35:46): text/uri-list drag data received
[0x8123890] [drop_received_cb] rb-sourcelist.c:561 (19:35:46): drop recieved
[0x8123890] [queue_stat_uri] rhythmdb.c:1789 (19:35:46): queueing stat for "file:///home/bes/media/music/first%20class%20-%20the%20finest%20in%20house/2006/cd1/03%20-%20Picco%20-%20It%20goes%20on%20&%20on.ogg"
[0x8144890] [action_thread_main] rhythmdb.c:2004 (19:35:46): executing RHYTHMDB_ACTION_STAT for "file:///home/bes/media/music/first%20class%20-%20the%20finest%20in%20house/2006/cd1/03%20-%20Picco%20-%20It%20goes%20on%20&%20on.ogg"
[0x8123890] [rhythmdb_process_events] rhythmdb.c:1674 (19:35:46): processing RHYTHMDB_EVENT_STAT
[0x8123890] [rhythmdb_process_stat_event] rhythmdb.c:1464 (19:35:46): not modified: file:///home/bes/media/music/first%20class%20-%20the%20finest%20in%20house/2006/cd1/03%20-%20Picco%20-%20It%20goes%20on%20&%20on.ogg
[0x8123890] [rb_playlist_manager_save_playlists_async] rb-playlist-manager.c:751 (19:35:48): saving the playlists
[0x8123890] [rb_playlist_manager_save_playlists_async] rb-playlist-manager.c:794 (19:35:48): no save needed, ignoring