Great! After disable JulDebugger, debug info is shown in console again :-)
login: testtest
password: testtest
D/SMACK﹕ SENT (0): <stream:stream xmlns='jabber:client' to='myservice' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'> D/SMACK﹕ RECV (0): <?xml version='1.0' encoding='UTF-8'?><stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="myhost" id="5b982e97" xml:lang="en" version="1.0"> D/SMACK﹕ RECV (0): <stream:features><starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"><required/></starttls><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>DIGEST-MD5</mechanism><mechanism>PLAIN</mechanism><mechanism>CRAM-MD5</mechanism></mechanisms></stream:features> D/SMACK﹕ SENT (0): <starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'></starttls> D/SMACK﹕ RECV (0): <proceed xmlns="urn:ietf:params:xml:ns:xmpp-tls"/> D/SMACK﹕ SENT (0): <stream:stream xmlns='jabber:client' to='myservice' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'> D/SMACK﹕ RECV (0): <?xml version='1.0' encoding='UTF-8'?><stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="myhost" id="5b982e97" xml:lang="en" version="1.0"><stream:features><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>DIGEST-MD5</mechanism><mechanism>PLAIN</mechanism><mechanism>CRAM-MD5</mechanism></mechanisms><auth xmlns="http://jabber.org/features/iq-auth"/></stream:features> D/SMACK﹕ SENT (0): <auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='DIGEST-MD5'>=</auth> D/SMACK﹕ RECV (0): <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cmVhbG09ImJhYnlhbS50YXBweXRhcHMuY29tIixub25jZT0iY2dWcWdWait1NjByMXVFRCtZV3BTMzRpUVpCdE0vWkpGWTBiQXJHdSIscW9wPSJhdXRoIixjaGFyc2V0PXV0Zi04LGFsZ29yaXRobT1tZDUtc2Vzcw==</challenge> D/SMACK﹕ SENT (0): <response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>dXNlcm5hbWU9InRlc3R0ZXN0IixyZWFsbT0iYmFieW1vbml0b3IzZyIsbm9uY2U9ImNnVnFnVmordTYwcjF1RUQrWVdwUzM0aVFaQnRNL1pKRlkwYkFyR3UiLGNub25jZT0iNlNFTUNMOUs5NE9Od1ZOOFMzVzZLNDN5MWo5YlJ0UnoiLG5jPTAwMDAwMDAxLHFvcD1hdXRoLGRpZ2VzdC11cmk9InhtcHAvYmFieW1vbml0b3IzZyIscmVzcG9uc2U9YTAwNWU1NDQ3YTVlOTFiZGFjZTI5OGU4Y2ZlZThjNTUsY2hhcnNldD11dGYtOA==</response> D/SMACK﹕ RECV (0): <failure xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><not-authorized/></failure>