こんにちは、質問をご覧いただきましてありがとうございます。
Ubuntu歴2ヶ月ほどのfire_ajexと申します。

スペック
Ubuntu:Ubuntu11.04
PC:DELL Mini9
CPU:Atom

タイトル通り、今Bansheeが起動できない状態に陥っています。
状況は、Bansheeを起動する→エラーダイアログが出る→強制終了と、こんなかんじです。
起動できなくなる直前、BluetoothヘッドセットをPCと接続しました。
これが原因かと思い接続を切り、デバイスの削除をしたのですがそれでも起動できません。

ダイアログの内容：
タイトル：で致命的なエラーが発生しました
内容：で致命的なエラーが発生しました
       Exception has been thrown by the target of an invocation.
詳細情報：想定外の例外が発生しましたObject reference not set to an instance of an object

  at Hyena.Data.Sqlite.SqliteModelCache`1[Banshee.Collection.Database.DatabaseArtistInfo].CheckCacheTable () [0x00000] in <filename unknown>:0
  at Hyena.Data.Sqlite.SqliteModelCache`1[Banshee.Collection.Database.DatabaseArtistInfo]..ctor (Hyena.Data.Sqlite.HyenaSqliteConnection connection, System.String uuid, ICacheableDatabaseModel model, Hyena.Data.Sqlite.SqliteModelProvider`1 provider) [0x00000] in <filename unknown>:0
  at Banshee.Database.BansheeModelCache`1[Banshee.Collection.Database.DatabaseArtistInfo]..ctor (Hyena.Data.Sqlite.HyenaSqliteConnection connection, System.String uuid, ICacheableDatabaseModel model, Hyena.Data.Sqlite.SqliteModelProvider`1 provider) [0x00000] in <filename unknown>:0
  at Banshee.Collection.Database.DatabaseFilterListModel`2[T,U]..ctor (System.String name, System.String label, Banshee.Sources.DatabaseSource source, Banshee.Collection.Database.DatabaseTrackListModel trackModel, Hyena.Data.Sqlite.HyenaSqliteConnection connection, Hyena.Data.Sqlite.SqliteModelProvider`1 provider, .U selectAllItem, System.String uuid) [0x00000] in <filename unknown>:0
  at Banshee.Collection.Database.DatabaseArtistListModel..ctor (Banshee.Sources.DatabaseSource source, Banshee.Collection.Database.DatabaseTrackListModel trackModel, Banshee.Database.BansheeDbConnection connection, System.String uuid) [0x00000] in <filename unknown>:0
  at Banshee.Sources.DatabaseSource+<CreateFiltersFor>c__IteratorB.MoveNext () [0x00000] in <filename unknown>:0
  at Banshee.Sources.DatabaseSource.DatabaseSourceInitialize () [0x00000] in <filename unknown>:0
  at Banshee.Sources.DatabaseSource..ctor (System.String generic_name, System.String name, System.String id, Int32 order, Banshee.Sources.Source parent) [0x00000] in <filename unknown>:0
  at Banshee.Sources.DatabaseSource..ctor (System.String generic_name, System.String name, System.String id, Int32 order) [0x00000] in <filename unknown>:0
  at Banshee.Sources.PrimarySource..ctor (System.String generic_name, System.String name, System.String id, Int32 order) [0x00000] in <filename unknown>:0
  at Banshee.Library.LibrarySource..ctor (System.String label, System.String name, Int32 order) [0x00000] in <filename unknown>:0
  at Banshee.Library.MusicLibrarySource..ctor () [0x00000] in <filename unknown>:0
  at Banshee.ServiceStack.Application.Run () [0x00000] in <filename unknown>:0
  at Banshee.Gui.GtkBaseClient.Initialize (Boolean registerCommonServices) [0x00000] in <filename unknown>:0
  at Banshee.Gui.GtkBaseClient..ctor (Boolean initializeDefault, System.String defaultIconName) [0x00000] in <filename unknown>:0
  at Banshee.Gui.GtkBaseClient..ctor () [0x00000] in <filename unknown>:0
  at Nereid.Client..ctor () [0x00000] in <filename unknown>:0
  at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (object,object[],System.Exception&)
  at System.Reflection.MonoCMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
Exception has been thrown by the target of an invocation.

  at System.Reflection.MonoCMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
  at System.Reflection.MonoCMethod.Invoke (BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
  at System.Reflection.ConstructorInfo.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0
  at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) [0x00000] in <filename unknown>:0
  at System.Activator.CreateInstance (System.Type type) [0x00000] in <filename unknown>:0
  at Banshee.Gui.GtkBaseClient.Startup () [0x00000] in <filename unknown>:0
  at Hyena.Gui.CleanRoomStartup.Startup (Hyena.Gui.StartupInvocationHandler startup) [0x00000] in <filename unknown>:0

.NET Version: 2.0.50727.1433
OS Version: Unix 2.6.38.10

Assembly Version Information:

gkeyfile-sharp (1.0.0.0)
Banshee.AudioCd (2.0.0.0)
Banshee.MiniMode (2.0.0.0)
Banshee.Mpris (2.0.0.0)
Banshee.CoverArt (2.0.0.0)
Banshee.Emusic (2.0.0.0)
Banshee.AmazonMp3 (2.0.0.0)
Banshee.LibraryWatcher (2.0.0.0)
Lastfm (2.0.0.0)
Banshee.Daap (2.0.0.0)
Migo (2.0.0.0)
Banshee.Podcasting (2.0.0.0)
Banshee.Dap (2.0.0.0)
Banshee.MultimediaKeys (2.0.0.0)
Banshee.Bpm (2.0.0.0)
Banshee.YouTube (2.0.0.0)
Banshee.WebBrowser (2.0.0.0)
Banshee.Wikipedia (2.0.0.0)
Banshee.Lastfm (2.0.0.0)
pango-sharp (2.12.0.0)
Banshee.Fixup (2.0.0.0)
Banshee.Widgets (2.0.0.0)
gio-sharp (2.14.0.0)
gudev-sharp (1.0.0.0)
Banshee.Gio (2.0.0.0)
Banshee.GStreamer (2.0.0.0)
System.Configuration (2.0.0.0)
NDesk.DBus.GLib (1.0.0.0)
gconf-sharp (2.24.0.0)
Banshee.Gnome (2.0.0.0)
Banshee.NowPlaying (2.0.0.0)
Mono.Cairo (2.0.0.0)
System.Xml (2.0.0.0)
Banshee.Core (2.0.0.0)
Hyena.Data.Sqlite (2.0.0.0)
System.Core (3.5.0.0)
gdk-sharp (2.12.0.0)
Mono.Addins (0.4.0.0)
atk-sharp (2.12.0.0)
Hyena.Gui (2.0.0.0)
gtk-sharp (2.12.0.0)
Banshee.ThickClient (2.0.0.0)
Nereid (2.0.0.0)
NDesk.DBus.Proxies (0.0.0.0)
Mono.Posix (2.0.0.0)
Hyena (2.0.0.0)
NDesk.DBus (1.0.0.0)
glib-sharp (2.12.0.0)
System (2.0.0.0)
Banshee.Services (2.0.0.0)
Banshee (2.0.0.0)
mscorlib (2.0.0.0)

Platform Information: Linux 2.6.38-10-generic i686 i386 GNU/Linux

Disribution Information:

[/etc/lsb-release]
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.04
DISTRIB_CODENAME=natty
DISTRIB_DESCRIPTION="Ubuntu 11.04"

[/etc/debian_version]
squeeze/sid

ダイアログ内容ここまで

再インストールやアドオンの削除も行ってみましたが問題は解決されませんでした。
お時間のある方、回答お願いします。