F8 upgrade: azureus broken

Hi all,

I just upgraded my F7 box to F8 via the dvd. So far, so good.

Alas, azureus won't start:

DEBUG::Fri Nov 09 21:20:23 CET 2007::com.aelitis.azureus.core.impl.AzureusCoreImpl$8::runSupport::512:
  java.lang.NullPointerException
        at org.gudy.azureus2.ui.swt.updater2.SWTUpdateChecker.initialize(SWTUpdateChecker.java:67)
        at org.gudy.azureus2.ui.swt.mainwindow.Initializer$4.started(Initializer.java :258)
        at com.aelitis.azureus.core.impl.AzureusCoreImpl$8.runSupport(AzureusCoreImpl.java:508)
        at org.gudy.azureus2.core3.util.AEThread.run(AEThread.java:69)

java: xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c-> xlib.lock' failed.
/usr/bin/azureus: line 18:  7509 Aborted                 LD_LIBRARY_PATH=/usr/lib/eclipse:/usr/lib CLASSPATH=/usr/lib/eclipse/swt-gtk-3.3.jar:`build-classpath bcprov jakarta-commons-cli log4j gtk2.8 glib0.2`:/usr/share/azureus/Azureus2.jar java -Dgnu.gcj.runtime.VMClassLoader.library_control=never -Dazureus.install.path=$APPDIR org.gudy.azureus2.ui.swt.Main "$@"

[1]+  Exit 134                azureus


Versions installed:

$ rpm -q azureus
azureus-2.5.0.4-3.fc8

$ rpm -q jre
jre-1.6.0_03-fcs

Any ideas what is going wong?

TIA

--
 Colin Brace
 Amsterdam