diff -up qt-x11-opensource-src-4.5.1/src/corelib/kernel/qcoreapplication.cpp.kde4_plugins qt-x11-opensource-src-4.5.1/src/corelib/kernel/qcoreapplication.cpp
--- qt-x11-opensource-src-4.5.1/src/corelib/kernel/qcoreapplication.cpp.kde4_plugins	2009-04-21 18:57:41.000000000 -0500
+++ qt-x11-opensource-src-4.5.1/src/corelib/kernel/qcoreapplication.cpp	2009-05-06 13:53:40.258081854 -0500
@@ -2061,6 +2061,15 @@ QStringList QCoreApplication::libraryPat
                 app_libpaths->append(installPathPlugins);
         }
 
+        // hack in support for kde4 plugin paths -- Rex
+        QString kde4PathPlugins = QLibraryInfo::location(QLibraryInfo::LibrariesPath) + QLatin1String("/kde4/plugins");
+        if (QFile::exists(kde4PathPlugins)) {
+            // Make sure we convert from backslashes to slashes.
+            // kde4PathPlugins = QDir(kde4PathPlugins).canonicalPath();
+            if (!app_libpaths->contains(kde4PathPlugins))
+                app_libpaths->append(kde4PathPlugins);
+        }
+
         // If QCoreApplication is not yet instantiated,
         // make sure we add the application path when we construct the QCoreApplication
         if (self) self->d_func()->appendApplicationPathToLibraryPaths();