I'm also getting this. It's making  Jitsi crash every few minutes. It's pretty much un-usable at this point.



ALSA lib pcm_dmix.c:961:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
org.osgi.framework.BundleException: Unresolved constraint in bundle net.java.sip.communicator.plugin.propertieseditor [82]: Unable to resolve 82.0: missing requirement [82.0] osgi.wiring.package; (osgi.wiring.package=org.apache.commons.lang3)
	at org.apache.felix.framework.Felix.resolveBundleRevision(Felix.java:3818)
	at org.apache.felix.framework.Felix.startBundle(Felix.java:1868)
	at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1191)
	at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:295)
	at java.lang.Thread.run(Thread.java:744)
14:14:33.440 SEVERE: [74] impl.gui.main.chat.ChatPanel.sendInstantMessage().1788 Failed to send message.
java.lang.NullPointerException
	at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicInstantMessagingSipImpl.getType(OperationSetBasicInstantMessagingSipImpl.java:511)
	at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicInstantMessagingSipImpl.createMessageRequest(OperationSetBasicInstantMessagingSipImpl.java:412)
	at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicInstantMessagingSipImpl.sendInstantMessage(OperationSetBasicInstantMessagingSipImpl.java:215)
	at net.java.sip.communicator.service.protocol.AbstractOperationSetBasicInstantMessaging.sendInstantMessage(AbstractOperationSetBasicInstantMessaging.java:368)
	at net.java.sip.communicator.impl.gui.main.chat.MetaContactChatTransport.sendInstantMessage(MetaContactChatTransport.java:378)
	at net.java.sip.communicator.impl.gui.main.chat.ChatPanel.sendInstantMessage(ChatPanel.java:1758)
	at net.java.sip.communicator.impl.gui.main.chat.ChatPanel.sendMessage(ChatPanel.java:1610)
	at net.java.sip.communicator.impl.gui.main.chat.ChatPanel$6.run(ChatPanel.java:1299)
14:14:33.977 SEVERE: [75] impl.gui.main.chat.ChatPanel.sendInstantMessage().1788 Failed to send message.
java.lang.NullPointerException
	at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicInstantMessagingSipImpl.getType(OperationSetBasicInstantMessagingSipImpl.java:511)
	at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicInstantMessagingSipImpl.createMessageRequest(OperationSetBasicInstantMessagingSipImpl.java:412)
	at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicInstantMessagingSipImpl.sendInstantMessage(OperationSetBasicInstantMessagingSipImpl.java:215)
	at net.java.sip.communicator.service.protocol.AbstractOperationSetBasicInstantMessaging.sendInstantMessage(AbstractOperationSetBasicInstantMessaging.java:368)
	at net.java.sip.communicator.impl.gui.main.chat.MetaContactChatTransport.sendInstantMessage(MetaContactChatTransport.java:378)
	at net.java.sip.communicator.impl.gui.main.chat.ChatPanel.sendInstantMessage(ChatPanel.java:1758)
	at net.java.sip.communicator.impl.gui.main.chat.ChatPanel.sendMessage(ChatPanel.java:1610)
	at net.java.sip.communicator.impl.gui.main.chat.ChatPanel$6.run(ChatPanel.java:1299)
14:14:40.970 SEVERE: [62] impl.gui.main.contactlist.ContactListPane.messageDeliveryFailed().458 408 Request Timeout
14:15:03.595 SEVERE: [62] impl.gui.main.contactlist.ContactListPane.messageDeliveryFailed().458 408 Request Timeout
14:15:04.095 SEVERE: [62] impl.gui.main.contactlist.ContactListPane.messageDeliveryFailed().458 408 Request Timeout
/usr/bin/java: symbol lookup error: /usr/lib/jni/libjdic_misc.so: undefined symbol: JAWT_GetAWT