If I start banshee with a non-italian locale (the rest of the system is in italian) it crashes when I switch to the second song.

Here is the output:
$ LANG=en_GB.UTF-8 banshee
[Info  20:31:37.689] Running Banshee 1.0.0
[Info  20:31:40.014] All services are started 1.720144s
[Info  20:31:40.764] nereid Client Started

Unhandled Exception: System.FormatException: String was not recognized as a valid DateTime.
  at System.DateTime.Parse (System.String s, IFormatProvider fp, DateTimeStyles styles) [0x00000] 
  at System.DateTime.Parse (System.String s, IFormatProvider fp) [0x00000] 
  at System.Convert.ToDateTime (System.String value, IFormatProvider provider) [0x00000] 
  at System.String.System.IConvertible.ToDateTime (IFormatProvider provider) [0x00000] 
  at System.Convert.ToType (System.Object value, System.Type conversionType, IFormatProvider provider) [0x00000] 
  at System.Convert.ChangeType (System.Object value, System.Type conversionType) [0x00000] 
  at Banshee.Configuration.DatabaseConfigurationClient.Get[DateTime] (System.String namespce, System.String key, DateTime fallback) [0x00014] in /tmp/buildd/banshee-1.0.0/src/Core/Banshee.Services/Banshee.Configuration/DatabaseConfigurationClient.cs:89 
  at Banshee.Configuration.DatabaseConfigurationClient.Get[DateTime] (System.String key, DateTime fallback) [0x00000] in /tmp/buildd/banshee-1.0.0/src/Core/Banshee.Services/Banshee.Configuration/DatabaseConfigurationClient.cs:82 
  at Banshee.CoverArt.CoverArtService.FetchCoverArt (Boolean force) [0x0003a] in /tmp/buildd/banshee-1.0.0/src/Extensions/Banshee.CoverArt/Banshee.CoverArt/CoverArtService.cs:161 
  at Banshee.CoverArt.CoverArtService.FetchCoverArt () [0x00022] in /tmp/buildd/banshee-1.0.0/src/Extensions/Banshee.CoverArt/Banshee.CoverArt/CoverArtService.cs:152 
  at Banshee.CoverArt.CoverArtService.OnTracksChanged (Banshee.Sources.Source sender, Banshee.Sources.TrackEventArgs args) [0x00000] in /tmp/buildd/banshee-1.0.0/src/Extensions/Banshee.CoverArt/Banshee.CoverArt/CoverArtService.cs:186 
  at (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs)
  at (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_Source_TrackEventArgs (Banshee.Sources.Source,Banshee.Sources.TrackEventArgs)
  at Banshee.Sources.PrimarySource+<>c__CompilerGenerated16.<OnTracksChanged>c__52 () [0x0004d] in /tmp/buildd/banshee-1.0.0/src/Core/Banshee.Services/Banshee.Sources/PrimarySource.cs:368