[news.eclipse.newcomer] [Help] On-Line Help Fails

[frtzkatz@xxxxxxxxx (Fritz_Katz )]

I'm working with a fresh install of eclipse. 

I'm running Linux Fedora Core-8,
$ uname -rm
2.6.25.6-27.fc8 i686

eclipse.buildId=I20070625-1500


Welcome window -> Overview -> "Workbench Basics" or any help item in 
eclipse will show a browser window with:
------------
HTTP ERROR: 500

Class org.apache.jasper.servlet.JspServlet does not implement the requested
interface javax.servlet.Servlet

RequestURI=/help/index.jsp

Powered by Jetty://
------------
There appears to be a similar bug on Windows:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=201183

And I see a bug filed against it at Redhat:
https://bugzilla.redhat.com/show_bug.cgi?id=350991

But the bug has been closed because it's 'upstream'. (Forgive me for being 
a newbie, but what is 'upstream'?)

------------
This exception appears in the console when I press any help link:
------------
Feb 27, 2009 4:37:46 PM org.mortbay.jetty.servlet.ServletHandler handle
WARNING: Error for 
/help/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2FgettingStarted%2Fintro%2Foverview.htm
java.lang.IncompatibleClassChangeError: Class 
org.apache.jasper.servlet.JspServlet does not implement the requested 
interface javax.servlet.Servlet
       at 
org.eclipse.equinox.jsp.jasper.JspServlet.init(JspServlet.java:81)
       at 
org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.initializeDelegate(ServletManager.java:195)
       at 
org.eclipse.equinox.http.registry.internal.ServletManager$ServletWrapper.service(ServletManager.java:179)
       at 
org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:90)
       at 
org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:109)
       at 
org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:75)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
       at 
org.eclipse.equinox.http.jetty.internal.HttpServerManager$InternalHttpServiceServlet.service(HttpServerManager.java:280)
       at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:428)
       at 
org.mortbay.jetty.servlet.ServletHandler.dispatch(ServletHandler.java:677)
       at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
       at org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
       at org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
       at org.mortbay.http.HttpServer.service(HttpServer.java:909)
       at org.mortbay.http.HttpConnection.service(HttpConnection.java:820)
       at 
org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:986)
       at org.mortbay.http.HttpConnection.handle(HttpConnection.java:837)
       at 
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:245)
       at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
       at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)

------------

------------