Starting Workshop for Weblogic 10GR3 on some configuration of Linux will always fail with the following screen dump. Probable reason for this failure is version of XUL runner in configured on linux.

Please doe rpm -qa | grep xul* and see if linux machine has xulrunner already configured. xulrunner version 1.9.0.x or above is not supported by workshop.

We will also observe that during initial failure JVM dump file is also created in the WORKSHOP_HOME (eg. jrockit.5003.dump) which will contain information for the root cause for this failure.
JVM dump file will contain the follwoing stack and
-- Java stack --
at org/eclipse/swt/internal/mozilla/XPCOM.NS_NewLocalFile(IZ[I)I(Native Method)
at org/eclipse/swt/browser/Mozilla.create(Mozilla.java:331)
at org/eclipse/swt/browser/Browser.<init>(Browser.java:109)
at org/eclipse/ui/internal/intro/impl/presentations/BrowserIntroPartImplementation.createPartControl(BrowserIntroPartImplementation.java:99)
and if you search for xulrunner you will fine line like acce5000-adf59600 */usr/lib/xulrunner-1.9/libxul.so which clearly indicates that xulrunner has some issues.

Uninstalling xulrunner is not recommended in most cases as many other applications might be dependent. Recommended approach is
1) Download http://releases.mozilla.org/pub/mozilla.org/xulrunner/releases/1.8.1.3/contrib/linux-i686/xulrunner-1.8.1.3.en-US.linux-i686-20080128.tar.gz
2) Untar to local file system (eg after unzipping /mneelapu/install/xulrunner)
3) Edit workshop.ini and add the following line -Dorg.eclipse.swt.browser.XULRunnerPath=/mneelapu/install/xulrunner

Work shop should start with out errors now.