Possible Duplicate:
Unsatisfied Link Error and missing .so files when starting Eclipse
after i've upgraded my ubuntu 11.10 to 12.04 eclipse fail to launch and gives me an error message telling me to see the log file. Here's the log file
!SESSION 2012-04-28 17:24:33.607 -----------------------------------------------
eclipse.buildId=I20110613-1736
java.version=1.7.0
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Command-line arguments: -os linux -ws gtk -arch x86
!ENTRY org.eclipse.osgi 4 0 2012-04-28 17:24:35.779
!MESSAGE Application error
!STACK 1
java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-gtk-3740 in java.library.path
no swt-gtk in java.library.path
Can't load library: /home/leo/.swt/lib/linux/x86/libswt-gtk-3740.so
Can't load library: /home/leo/.swt/lib/linux/x86/libswt-gtk.so
at org.eclipse.swt.internal.Library.loadLibrary(Library.java:285)
at org.eclipse.swt.internal.Library.loadLibrary(Library.java:194)
at org.eclipse.swt.internal.C.<clinit>(C.java:21)
at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:63)
at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:54)
at org.eclipse.swt.widgets.Display.<clinit>(Display.java:132)
at org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:695)
at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:161)
at org.eclipse.ui.internal.ide.application.IDEApplication.createDisplay(IDEApplication.java:153)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:95)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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:601)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
