Work around problems with kde 4.2.0 by checking for that exact version.

Need to remove that at one point, but having someone report it one day
after we tried to remove this, means not now.

src/plugins/designer/formeditorplugin.cpp

@@ -46,6 +46,7 @@
 
 #include <QtCore/QtPlugin>
 #include <QtCore/QDebug>
+#include <QtCore/QProcess>
 
 #ifdef CPP_ENABLED
 #    include <QtGui/QAction>
@@ -100,7 +101,19 @@ bool FormEditorPlugin::initialize(const QStringList &arguments, QString *error)
     m_factory = new FormEditorFactory;
     addObject(m_factory);
 
-    FormEditorW::ensureInitStage(FormEditorW::RegisterPlugins);
+    if (qgetenv("KDE_SESSION_VERSION") == QByteArray("4")) {
+        // KDE 4, possibly dangerous...
+        // KDE 4.2.0 had a nasty bug, which resulted in the File/Open Dialog crashing
+        // so check for that an fully load the plugins
+        QProcess proc;
+        proc.start("kde4-config", QStringList() << "--version");
+        proc.waitForFinished();
+        QString output = proc.readAll();
+        if (output.contains("KDE: 4.2.0"))
+            FormEditorW::ensureInitStage(FormEditorW::FullyInitialized);
+    } else {
+        FormEditorW::ensureInitStage(FormEditorW::RegisterPlugins);
+    }
 
     error->clear();
     return true;