title: Problem with Eclipse plugin in Ubuntu
body: <p>I am trying to install the m2eclipse plugin in Eclipse 3.5 on Ubuntu 9.04 Jaunty via the update manager and can't figure out this problem.</p>
  
  <p>After I downloaded and installed the plugin, I restarted Eclipse and checked the Preferences - no Maven there. I double checked the configuration. I can see the m2e plugins I installed in the "Installed Software" tab, but not in the "Plug-ins" tab.</p>
  
  <p>I already read something about deleting the ~/.eclipse folder and restart Eclipse with -clean and tried it, but to no avail. I had no problem doing this under WinXP.</p>
  
  <p>Does anyone know how to resolve this issue? Any help would be appreciated.</p>
  
  <p>PS: I checked the logfile in my workspace. It says something about</p>
  
  <pre><code>!ENTRY org.eclipse.jface 4 0 2009-08-30 19:13:37.390
  !MESSAGE Undefined context while filtering dialog/window contexts
  !STACK 0
  org.eclipse.core.commands.common.NotDefinedException: Cannot get the parent identifier from an undefined context. org.maven.ide.eclipse.actionSet
      at org.eclipse.core.commands.contexts.Context.getParentId(Context.java:201)
      at org.eclipse.jface.bindings.BindingManager.createFilteredContextTreeFor(BindingManager.java:825)
      at org.eclipse.jface.bindings.BindingManager.recomputeBindings(BindingManager.java:1721)
      at org.eclipse.jface.bindings.BindingManager.contextManagerChanged(BindingManager.java:689)
      at org.eclipse.core.commands.contexts.ContextManager.fireContextManagerChanged(ContextManager.java:165)
      at org.eclipse.core.commands.contexts.ContextManager.addActiveContext(ContextManager.java:109)
      at org.eclipse.ui.internal.contexts.ContextAuthority.updateContext(ContextAuthority.java:756)
      at org.eclipse.ui.internal.contexts.ContextAuthority.activateContext(ContextAuthority.java:173)
      at org.eclipse.ui.internal.contexts.ContextService.activateContext(ContextService.java:96)
      at org.eclipse.ui.internal.contexts.SlaveContextService.doActivateContext(SlaveContextService.java:283)
  </code></pre>
  
  <p>but this does appear also for other ActionSet classes (e.g. org.eclipse.jdt.ui.JavaElementCreationActionSet).</p>
  
  <p>EDIT:</p>
  
  <pre><code>max@max-laptop:~$ java -version
  java version "1.6.0_14"
  Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
  Java HotSpot(TM) Server VM (build 14.0-b16, mixed mode)
  </code></pre>