Error: (502) XMPPError connecting to intellijoin.org:5222

Suffering the same issue as David, anyone got any pointers?

This is causing a crash for me ... a year later.

XMPPError connecting to intellijoin.org:5222.: (502) XMPPError connecting to intellijoin.org:5222.
  -- caused by: java.net.ConnectException: Connection timed out: connect
 at org.jivesoftware.smack.XMPPConnection.connectUsingConfiguration(XMPPConnection.java:288)
 at org.jivesoftware.smack.XMPPConnection.<init>(XMPPConnection.java:221)
 at jetbrains.communicator.jabber.impl.JabberFacadeImpl._createConnection(JabberFacadeImpl.java:155)
 at jetbrains.communicator.jabber.impl.JabberFacadeImpl.connect(JabberFacadeImpl.java:120)
 at jetbrains.communicator.jabber.impl.JabberFacadeImpl.connect(JabberFacadeImpl.java:116)
 at jetbrains.communicator.jabber.impl.JabberTransport$1.run(JabberTransport.java:123)
 at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:386)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
 at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
 at java.util.concurrent.FutureTask.run(FutureTask.java:138)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
 at java.lang.Thread.run(Thread.java:662)
 at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:130)
Nested Exception:
java.net.ConnectException: Connection timed out: connect
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
 at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
 at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
 at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
 at java.net.Socket.connect(Socket.java:529)
 at java.net.Socket.connect(Socket.java:478)
 at java.net.Socket.<init>(Socket.java:375)
 at java.net.Socket.<init>(Socket.java:189)
 at org.jivesoftware.smack.XMPPConnection.connectUsingConfiguration(XMPPConnection.java:273)
 at org.jivesoftware.smack.XMPPConnection.<init>(XMPPConnection.java:221)
 at jetbrains.communicator.jabber.impl.JabberFacadeImpl._createConnection(JabberFacadeImpl.java:155)
 at jetbrains.communicator.jabber.impl.JabberFacadeImpl.connect(JabberFacadeImpl.java:120)
 at jetbrains.communicator.jabber.impl.JabberFacadeImpl.connect(JabberFacadeImpl.java:116)
 at jetbrains.communicator.jabber.impl.JabberTransport$1.run(JabberTransport.java:123)
 at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:386)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)

I use talk.google.com is there any reason to use intellijoin.org?

Actually, I don't have IDETalk configured in any way. It's "on" - which is to say that it's not a disabled plugin. But I'm not using it.
So, I don't know why it's trying to contact intellijoin anyway.