Comment 9 for bug 83594

Still a problem here, occurred about one week ago. When using java-gcj, configured like this:

$ sudo update-alternatives --config java

There are 3 alternatives which provide `java'.
  Selection Alternative
-----------------------------------------------
          1 /usr/lib/jvm/java-6-sun/jre/bin/java
          2 /usr/bin/gij-wrapper-4.1
*+ 3 /usr/lib/jvm/java-gcj/jre/bin/java

Press enter to keep the default[*], or type selection number:

azureus starts up, but torrents are extremely slow. The same with gij!

My default configuration though is to use java-6-sun, but an update destroyed this last week. When I start Azureus using java-6-sun, this is displayed:
$ azureus
java: xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.
Aborted (core dumped)