Using banshee in precise while on a public wifi network, it appears that banshee finds a UPnP server and tries to connect to it, only to receive a 403 error, which causes banshee to crash.
ssweeny@talyn:~$ banshee
[Info 16:23:50.345] Running Banshee 2.4.0: [Ubuntu precise (development branch) (linux-gnu, x86_64) @ 2012-03-24 12:56:11 UTC]
[Info 16:23:52.081] Updating web proxy from GConf
[Info 16:23:52.268] All services are started 1.507332
[Info 16:23:52.949] AmazonMP3 store redirect URL: https://one.ubuntu.com/music/store/amz/
[Info 16:23:54.019] nereid Client Started
[Info 16:23:54.177] GStreamer version 0.10.36.0, gapless: False, replaygain: False
Unhandled Exception: Mono.Upnp.Control.UpnpControlException: The invokation failed. ---> System.Net.WebException: The remote server returned an error: (403) Forbidden.
at System.Net.HttpWebRequest.CheckFinalStatus (System.Net.WebAsyncResult result) [0x00000] in <filename unknown>:0
at System.Net.HttpWebRequest.SetResponseData (System.Net.WebConnectionData data) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Upnp.Internal.ControlClient.Invoke (System.String actionName, IDictionary`2 arguments) [0x00000] in <filename unknown>:0
at Mono.Upnp.Control.ServiceController.Invoke (Mono.Upnp.Control.ServiceAction action, IDictionary`2 arguments, Int32 retryAttempts) [0x00000] in <filename unknown>:0
at Mono.Upnp.Control.ServiceAction.InvokeCore (IDictionary`2 arguments, Int32 retryAttempts) [0x00000] in <filename unknown>:0
at Mono.Upnp.Control.ServiceAction.Invoke (IDictionary`2 arguments, Int32 retryAttempts) [0x00000] in <filename unknown>:0
at Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.ContentDirectoryController.Browse (System.String objectId, BrowseFlag browseFlag, System.String filter, UInt32 startingIndex, UInt32 requestedCount, System.String sortCriteria, System.UInt32& numberReturned, System.UInt32& totalMatches, System.UInt32& updateId) [0x00000] in <filename unknown>:0
at Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.RemoteContentDirectory.GetObject[Container] (System.String id) [0x00000] in <filename unknown>:0
at Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.RemoteContentDirectory.GetRootObject () [0x00000] in <filename unknown>:0
at Banshee.UPnPClient.UPnPServerSource.Parse (Mono.Upnp.Device device, Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.ContentDirectoryController content_directory) [0x00000] in <filename unknown>:0
at Banshee.UPnPClient.UPnPServerSource+<UPnPServerSource>c__AnonStorey0.<>m__0 () [0x00000] in <filename unknown>:0
at System.Threading.Thread.StartInternal () [0x00000] in <filename unknown>:0
[ERROR] FATAL UNHANDLED EXCEPTION: Mono.Upnp.Control.UpnpControlException: The invokation failed. ---> System.Net.WebException: The remote server returned an error: (403) Forbidden.
at System.Net.HttpWebRequest.CheckFinalStatus (System.Net.WebAsyncResult result) [0x00000] in <filename unknown>:0
at System.Net.HttpWebRequest.SetResponseData (System.Net.WebConnectionData data) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Upnp.Internal.ControlClient.Invoke (System.String actionName, IDictionary`2 arguments) [0x00000] in <filename unknown>:0
at Mono.Upnp.Control.ServiceController.Invoke (Mono.Upnp.Control.ServiceAction action, IDictionary`2 arguments, Int32 retryAttempts) [0x00000] in <filename unknown>:0
at Mono.Upnp.Control.ServiceAction.InvokeCore (IDictionary`2 arguments, Int32 retryAttempts) [0x00000] in <filename unknown>:0
at Mono.Upnp.Control.ServiceAction.Invoke (IDictionary`2 arguments, Int32 retryAttempts) [0x00000] in <filename unknown>:0
at Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.ContentDirectoryController.Browse (System.String objectId, BrowseFlag browseFlag, System.String filter, UInt32 startingIndex, UInt32 requestedCount, System.String sortCriteria, System.UInt32& numberReturned, System.UInt32& totalMatches, System.UInt32& updateId) [0x00000] in <filename unknown>:0
at Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.RemoteContentDirectory.GetObject[Container] (System.String id) [0x00000] in <filename unknown>:0
at Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.RemoteContentDirectory.GetRootObject () [0x00000] in <filename unknown>:0
at Banshee.UPnPClient.UPnPServerSource.Parse (Mono.Upnp.Device device, Mono.Upnp.Dcp.MediaServer1.ContentDirectory1.ContentDirectoryController content_directory) [0x00000] in <filename unknown>:0
at Banshee.UPnPClient.UPnPServerSource+<UPnPServerSource>c__AnonStorey0.<>m__0 () [0x00000] in <filename unknown>:0
at System.Threading.Thread.StartInternal () [0x00000] in <filename unknown>:0
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: banshee 2.4.0-1ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
CheckboxSubmission: f24bf886cf6158b8cd6d663f166fcff9
CheckboxSystem: 3935143777c965daaa64b51f0134f712
Date: Tue Apr 3 16:24:38 2012
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
TERM=xterm
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: banshee
UpgradeStatus: Upgraded to precise on 2012-01-17 (77 days ago)
I have forwarded your bug to the GNOME bugtracker (see the gnome-bugs link above). Please CC yourself to that bug to track its status.