I see this too. 

Ubuntu Dapper Beta

azureus             2.4.0.2-0ubuntu2
j2re1.4                           1.4.2.02-1ubuntu3

Enabled logging inside azureus, but nothing was written to the log.

Startup:
froh@tigergut:~$ changeLocale: *Default Language* != English (Norway). Searching without country..
changeLocale: Searching for language English in *any* country..
changeLocale: no message properties for Locale 'English (Norway)' (en_NO), using 'English (default)'

When it closes, this is printed on the terminal.

froh@tigergut:~$ DEBUG::Sun Apr 30 21:47:31 CEST 2006::com.aelitis.azureus.plugins.upnp.UPnPPluginService::removeMapping::351:
  com.aelitis.net.upnp.UPnPException: Invoke of 'urn:schemas-upnp-org:service:WANPPPConnection:1#DeletePortMapping' fails: port out of range:-1
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:134)
        at com.aelitis.net.upnp.impl.services.UPnPSSWANConnectionImpl.deletePortMapping(UPnPSSWANConnectionImpl.java:373)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:344)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:264)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin.closeDown(UPnPPlugin.java:481)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin$1.closedownComplete(UPnPPlugin.java:106)
        at org.gudy.azureus2.pluginsimpl.local.PluginInterfaceImpl.closedownComplete(PluginInterfaceImpl.java:600)
        at org.gudy.azureus2.pluginsimpl.local.PluginInitializer.destroyed(PluginInitializer.java:1279)
        at org.gudy.azureus2.core3.global.impl.GlobalManagerImpl$1.dispatch(GlobalManagerImpl.java:107)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchInternal(ListenerManager.java:359)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchLoop(ListenerManager.java:435)
        at org.gudy.azureus2.core3.util.ListenerManager$1.runSupport(ListenerManager.java:118)
        at org.gudy.azureus2.core3.util.AEThread.run(AEThread.java:69)
Caused by: java.lang.IllegalArgumentException: port out of range:-1
        at java.net.InetSocketAddress.<init>(InetSocketAddress.java:108)
        at java.net.Socket.<init>(Socket.java:124)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:538)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:452)
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:98)
        ... 12 more

DEBUG::Sun Apr 30 21:47:31 CEST 2006::com.aelitis.azureus.plugins.upnp.UPnPPluginService::removeMapping::351:
  com.aelitis.net.upnp.UPnPException: Invoke of 'urn:schemas-upnp-org:service:WANPPPConnection:1#DeletePortMapping' fails: port out of range:-1
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:134)
        at com.aelitis.net.upnp.impl.services.UPnPSSWANConnectionImpl.deletePortMapping(UPnPSSWANConnectionImpl.java:373)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:344)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:264)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin.closeDown(UPnPPlugin.java:481)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin$1.closedownComplete(UPnPPlugin.java:106)
        at org.gudy.azureus2.pluginsimpl.local.PluginInterfaceImpl.closedownComplete(PluginInterfaceImpl.java:600)
        at org.gudy.azureus2.pluginsimpl.local.PluginInitializer.destroyed(PluginInitializer.java:1279)
        at org.gudy.azureus2.core3.global.impl.GlobalManagerImpl$1.dispatch(GlobalManagerImpl.java:107)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchInternal(ListenerManager.java:359)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchLoop(ListenerManager.java:435)
        at org.gudy.azureus2.core3.util.ListenerManager$1.runSupport(ListenerManager.java:118)
        at org.gudy.azureus2.core3.util.AEThread.run(AEThread.java:69)
Caused by: java.lang.IllegalArgumentException: port out of range:-1
        at java.net.InetSocketAddress.<init>(InetSocketAddress.java:108)
        at java.net.Socket.<init>(Socket.java:124)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:538)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:452)
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:98)
        ... 12 more

DEBUG::Sun Apr 30 21:47:31 CEST 2006::com.aelitis.azureus.plugins.upnp.UPnPPluginService::removeMapping::351:
  com.aelitis.net.upnp.UPnPException: Invoke of 'urn:schemas-upnp-org:service:WANPPPConnection:1#DeletePortMapping' fails: port out of range:-1
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:134)
        at com.aelitis.net.upnp.impl.services.UPnPSSWANConnectionImpl.deletePortMapping(UPnPSSWANConnectionImpl.java:373)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:344)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:264)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin.closeDown(UPnPPlugin.java:481)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin$1.closedownComplete(UPnPPlugin.java:106)
        at org.gudy.azureus2.pluginsimpl.local.PluginInterfaceImpl.closedownComplete(PluginInterfaceImpl.java:600)
        at org.gudy.azureus2.pluginsimpl.local.PluginInitializer.destroyed(PluginInitializer.java:1279)
        at org.gudy.azureus2.core3.global.impl.GlobalManagerImpl$1.dispatch(GlobalManagerImpl.java:107)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchInternal(ListenerManager.java:359)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchLoop(ListenerManager.java:435)
        at org.gudy.azureus2.core3.util.ListenerManager$1.runSupport(ListenerManager.java:118)
        at org.gudy.azureus2.core3.util.AEThread.run(AEThread.java:69)
Caused by: java.lang.IllegalArgumentException: port out of range:-1
        at java.net.InetSocketAddress.<init>(InetSocketAddress.java:108)
        at java.net.Socket.<init>(Socket.java:124)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:538)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:452)
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:98)
        ... 12 more

DEBUG::Sun Apr 30 21:47:32 CEST 2006::com.aelitis.azureus.plugins.upnp.UPnPPluginService::removeMapping::351:
  com.aelitis.net.upnp.UPnPException: Invoke of 'urn:schemas-upnp-org:service:WANPPPConnection:1#DeletePortMapping' fails: port out of range:-1
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:134)
        at com.aelitis.net.upnp.impl.services.UPnPSSWANConnectionImpl.deletePortMapping(UPnPSSWANConnectionImpl.java:373)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:344)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:264)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin.closeDown(UPnPPlugin.java:481)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin$1.closedownComplete(UPnPPlugin.java:106)
        at org.gudy.azureus2.pluginsimpl.local.PluginInterfaceImpl.closedownComplete(PluginInterfaceImpl.java:600)
        at org.gudy.azureus2.pluginsimpl.local.PluginInitializer.destroyed(PluginInitializer.java:1279)
        at org.gudy.azureus2.core3.global.impl.GlobalManagerImpl$1.dispatch(GlobalManagerImpl.java:107)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchInternal(ListenerManager.java:359)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchLoop(ListenerManager.java:435)
        at org.gudy.azureus2.core3.util.ListenerManager$1.runSupport(ListenerManager.java:118)
        at org.gudy.azureus2.core3.util.AEThread.run(AEThread.java:69)
Caused by: java.lang.IllegalArgumentException: port out of range:-1
        at java.net.InetSocketAddress.<init>(InetSocketAddress.java:108)
        at java.net.Socket.<init>(Socket.java:124)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:538)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:452)
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:98)
        ... 12 more

DEBUG::Sun Apr 30 21:47:32 CEST 2006::com.aelitis.azureus.plugins.upnp.UPnPPluginService::removeMapping::351:
  com.aelitis.net.upnp.UPnPException: Invoke of 'urn:schemas-upnp-org:service:WANPPPConnection:1#DeletePortMapping' fails: port out of range:-1
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:134)
        at com.aelitis.net.upnp.impl.services.UPnPSSWANConnectionImpl.deletePortMapping(UPnPSSWANConnectionImpl.java:373)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:344)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:264)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin.closeDown(UPnPPlugin.java:481)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin$1.closedownComplete(UPnPPlugin.java:106)
        at org.gudy.azureus2.pluginsimpl.local.PluginInterfaceImpl.closedownComplete(PluginInterfaceImpl.java:600)
        at org.gudy.azureus2.pluginsimpl.local.PluginInitializer.destroyed(PluginInitializer.java:1279)
        at org.gudy.azureus2.core3.global.impl.GlobalManagerImpl$1.dispatch(GlobalManagerImpl.java:107)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchInternal(ListenerManager.java:359)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchLoop(ListenerManager.java:435)
        at org.gudy.azureus2.core3.util.ListenerManager$1.runSupport(ListenerManager.java:118)
        at org.gudy.azureus2.core3.util.AEThread.run(AEThread.java:69)
Caused by: java.lang.IllegalArgumentException: port out of range:-1
        at java.net.InetSocketAddress.<init>(InetSocketAddress.java:108)
        at java.net.Socket.<init>(Socket.java:124)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:538)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:452)
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:98)
        ... 12 more

DEBUG::Sun Apr 30 21:47:32 CEST 2006::com.aelitis.azureus.plugins.upnp.UPnPPluginService::removeMapping::351:
  com.aelitis.net.upnp.UPnPException: Invoke of 'urn:schemas-upnp-org:service:WANPPPConnection:1#DeletePortMapping' fails: port out of range:-1
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:134)
        at com.aelitis.net.upnp.impl.services.UPnPSSWANConnectionImpl.deletePortMapping(UPnPSSWANConnectionImpl.java:373)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:344)
        at com.aelitis.azureus.plugins.upnp.UPnPPluginService.removeMapping(UPnPPluginService.java:264)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin.closeDown(UPnPPlugin.java:481)
        at com.aelitis.azureus.plugins.upnp.UPnPPlugin$1.closedownComplete(UPnPPlugin.java:106)
        at org.gudy.azureus2.pluginsimpl.local.PluginInterfaceImpl.closedownComplete(PluginInterfaceImpl.java:600)
        at org.gudy.azureus2.pluginsimpl.local.PluginInitializer.destroyed(PluginInitializer.java:1279)
        at org.gudy.azureus2.core3.global.impl.GlobalManagerImpl$1.dispatch(GlobalManagerImpl.java:107)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchInternal(ListenerManager.java:359)
        at org.gudy.azureus2.core3.util.ListenerManager.dispatchLoop(ListenerManager.java:435)
        at org.gudy.azureus2.core3.util.ListenerManager$1.runSupport(ListenerManager.java:118)
        at org.gudy.azureus2.core3.util.AEThread.run(AEThread.java:69)
Caused by: java.lang.IllegalArgumentException: port out of range:-1
        at java.net.InetSocketAddress.<init>(InetSocketAddress.java:108)
        at java.net.Socket.<init>(Socket.java:124)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:538)
        at com.aelitis.net.upnp.impl.UPnPImpl.performSOAPRequest(UPnPImpl.java:452)
        at com.aelitis.net.upnp.impl.services.UPnPActionInvocationImpl.invoke(UPnPActionInvocationImpl.java:98)
        ... 12 more