This and much more is the output after I remove and reset the check-mark of one of the accounts:

(01:03:10) util: Writing file /home/user/.purple/icons/727a0ea600117a7f81e5c35bad9204cfe8621517.png
(01:03:10) util: Writing file /home/user/.purple/icons/a7908ff7bcb9b3b4b5a75e7e8bbb4e72343ca4cc.png
(01:03:10) util: Writing file /home/user/.purple/icons/353eaeca3e522bc42fbe532defa86b115885727e.png
(01:03:13) account: Connecting to account <email address hidden>/home.
(01:03:13) connection: Connecting. gc = 0x8574e28
(01:03:13) dns: DNS query for 'sampleserver.org' queued
(01:03:13) dns: Created new DNS child 3862, there are now 1 children.
(01:03:13) dns: Successfully sent DNS request to child 3862
(01:03:13) dns: Got response for 'sampleserver.org'
(01:03:13) dnsquery: IP resolved for sampleserver.org
(01:03:13) proxy: Attempting connection to ........ (some IP address)
(01:03:13) proxy: Connecting to sampleserver.org:5222 with no proxy
(01:03:13) proxy: Connection in progress
(01:03:13) proxy: Connecting to sampleserver.org:5222.
(01:03:13) proxy: Connected to sampleserver.org:5222.
(01:03:13) jabber: Sending (<email address hidden>/home): <?xml version='1.0' ?>
(01:03:13) jabber: Sending (<email address hidden>/home): <stream:stream to='sample.org' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>
(01:03:14) jabber: Recv (186): <?xml version='1.0' encoding='UTF-8'?><stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="sample.org" id="18030155" xml:lang="en" version="1.0">
(01:03:14) jabber: Recv (305): <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>JIVE-SHAREDSECRET</mechanism><mechanism>PLAIN</mechanism><mechanism>CRAM-MD5</mechanism></mechanisms></stream:features>
(01:03:14) jabber: Sending (<email address hidden>/home): <starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>
(01:03:15) jabber: Recv (50): <proceed xmlns="urn:ietf:params:xml:ns:xmpp-tls"/>
(01:03:15) nss: subject=CN=sampleserver.org issuer=CN=sampleserver.org
(01:03:15) certificate/x509/tls_cached: Starting verify for sampleserver.org
(01:03:15) certificate/x509/tls_cached: Checking for cached cert...
(01:03:15) certificate/x509/tls_cached: ...Found cached cert
(01:03:15) nss/x509: Loading certificate from /home/user/.purple/certificates/x509/tls_peers/sampleserver.org
(01:03:15) certificate/x509/tls_cached: Peer cert matched cached
(01:03:15) nss/x509: Exporting certificate to /home/user/.purple/certificates/x509/tls_peers/sampleserver.org
(01:03:15) util: Writing file /home/user/.purple/certificates/x509/tls_peers/sampleserver.org
(01:03:16) certificate: Successfully verified certificate for sampleserver.org
(01:03:16) jabber: Sending (ssl) (<email address hidden>/home): <stream:stream to='sample.org' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>
(01:03:16) util: Writing file accounts.xml to directory /home/user/.purple
(01:03:16) util: Writing file /home/user/.purple/accounts.xml
(01:03:16) jabber: Recv (ssl)(619): <?xml version='1.0' encoding='UTF-8'?><stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="sample.org" id="18030155" xml:lang="en" version="1.0"><stream:features><mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl"><mechanism>DIGEST-MD5</mechanism><mechanism>JIVE-SHAREDSECRET</mechanism><mechanism>PLAIN</mechanism><mechanism>CRAM-MD5</mechanism></mechanisms><compression xmlns="http://jabber.org/features/compress"><method>zlib</method></compression><auth xmlns="http://jabber.org/features/iq-auth"/><register xmlns="http://jabber.org/features/iq-register"/></stream:features>
(01:03:16) sasl: Mechs found: DIGEST-MD5 JIVE-SHAREDSECRET PLAIN CRAM-MD5
(01:03:16) jabber: Sending (ssl) (<email address hidden>/home): <auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='DIGEST-MD5'/>