ago@amd64box ~ $ vuze 
Creating /home/ago/.azureus
Creating /home/ago/.azureus/gentoo.config
$UI not set defaulting to swt
file:/usr/share/swt-3.7/lib/swt.jar ; file:/usr/share/json-simple/lib/json-simple.jar ; 
file:/usr/share/bcprov-1.3/lib/bcprov.jar ; file:/usr/share/log4j/lib/log4j.jar ; 
file:/usr/share/vuze/lib/Azureus2.jar ; file:/usr/share/commons-cli-1/lib/commons-cli.jar ; 
file:/home/ago/
DEBUG::Tue Aug 21 15:07:12 CEST 2012  Successfully migrated key management
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
        at org.gudy.azureus2.ui.swt.Main.<init>(Main.java:114)
        at org.gudy.azureus2.ui.swt.Main.main(Main.java:292)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.gudy.azureus2.ui.common.Main.directLaunch(Main.java:229)
        at org.gudy.azureus2.ui.common.Main.main(Main.java:132)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at com.aelitis.azureus.launcher.MainExecutor$1.run(MainExecutor.java:37)
        at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: 
        no swt-gnome-gtk-3740 in java.library.path
        no swt-gnome-gtk in java.library.path
        Can't load library: /home/ago/.swt/lib/linux/x86_64/libswt-gnome-gtk-3740.so
        Can't load library: /home/ago/.swt/lib/linux/x86_64/libswt-gnome-gtk.so

        at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
        at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
        at org.eclipse.swt.internal.gnome.GNOME.<clinit>(Unknown Source)
        at org.eclipse.swt.program.Program.gnome_24_launch(Unknown Source)
        at org.eclipse.swt.program.Program.launch(Unknown Source)
        at org.eclipse.swt.program.Program.launch(Unknown Source)
        at org.gudy.azureus2.ui.swt.Utils.launch(Utils.java:955)
        at com.aelitis.azureus.ui.swt.Initializer.checkInstallID(Initializer.java:303)                                                                                              
        at com.aelitis.azureus.ui.swt.Initializer.runInSWTThread(Initializer.java:272)                                                                                              
        at org.gudy.azureus2.ui.swt.mainwindow.SWTThread.<init>(SWTThread.java:271)                                                                                                 
        at org.gudy.azureus2.ui.swt.mainwindow.SWTThread.createInstance(SWTThread.java:63)                                                                                          
        at com.aelitis.azureus.ui.swt.Initializer.<init>(Initializer.java:162)                                                                                                      
        ... 18 more