diff --git a/src/kpackage/package.cpp b/src/kpackage/package.cpp
--- a/src/kpackage/package.cpp
+++ b/src/kpackage/package.cpp
@@ -42,6 +42,7 @@
 #include "private/package_p.h"
 //#include "private/packages_p.h"
 #include "private/packagejob_p.h"
+#include "private/packageloader_p.h"
 
 namespace KPackage
 {
@@ -816,6 +817,7 @@
 {
     const QString src = sourcePackage;
     QString dest = packageRoot.isEmpty() ? defaultPackageRoot() : packageRoot;
+    KPackage::PackageLoader::self()->d->maxCacheAge = -1;
 
     //use absolute paths if passed, otherwise go under share
     if (!QDir::isAbsolutePath(dest)) {
@@ -835,6 +837,7 @@
 {
     const QString src = sourcePackage;
     QString dest = packageRoot.isEmpty() ? defaultPackageRoot() : packageRoot;
+     KPackage::PackageLoader::self()->d->maxCacheAge = -1;
 
     //use absolute paths if passed, otherwise go under share
     if (!QDir::isAbsolutePath(dest)) {
@@ -852,6 +855,7 @@
 
 KJob *Package::uninstall(const QString &packageName, const QString &packageRoot)
 {
+     KPackage::PackageLoader::self()->d->maxCacheAge = -1;
     d->createPackageMetadata(packageRoot + QLatin1Char('/') + packageName);
     if (!d->structure) {
         return nullptr;
diff --git a/src/kpackage/packageloader.h b/src/kpackage/packageloader.h
--- a/src/kpackage/packageloader.h
+++ b/src/kpackage/packageloader.h
@@ -131,6 +131,7 @@
     virtual ~PackageLoader();
 
 private:
+    friend class Package;
     PackageLoaderPrivate *const d;
     Q_DISABLE_COPY(PackageLoader)
 };
diff --git a/src/kpackage/packageloader.cpp b/src/kpackage/packageloader.cpp
--- a/src/kpackage/packageloader.cpp
+++ b/src/kpackage/packageloader.cpp
@@ -18,6 +18,7 @@
  */
 
 #include "packageloader.h"
+#include "private/packageloader_p.h"
 
 #include <QStandardPaths>
 #include <QDateTime>
@@ -46,34 +47,6 @@
 static PackageLoader *s_packageTrader = nullptr;
 
 
-class PackageLoaderPrivate
-{
-public:
-    PackageLoaderPrivate()
-        : isDefaultLoader(false),
-          packageStructurePluginDir(QStringLiteral("kpackage/packagestructure"))
-    {
-    }
-
-    static QSet<QString> knownCategories();
-    static QString parentAppConstraint(const QString &parentApp = QString());
-
-    static QSet<QString> s_customCategories;
-
-    QHash<QString, QPointer<PackageStructure> > structures;
-    bool isDefaultLoader;
-    QString packageStructurePluginDir;
-    // We only use this cache during start of the process to speed up many consecutive calls
-    // After that, we're too afraid to produce race conditions and it's not that time-critical anyway
-    // the 20 seconds here means that the cache is only used within 20sec during startup, after that,
-    // complexity goes up and we'd have to update the cache in order to avoid subtle bugs
-    // just not using the cache is way easier then, since it doesn't make *that* much of a difference,
-    // anyway
-    int maxCacheAge = 20;
-    qint64 pluginCacheAge = 0;
-    QHash<QString, QList<KPluginMetaData>> pluginCache;
-};
-
 QSet<QString> PackageLoaderPrivate::s_customCategories;
 
 QSet<QString> PackageLoaderPrivate::knownCategories()
diff --git a/src/kpackage/private/packageloader_p.h b/src/kpackage/private/packageloader_p.h
new file mode 100644
--- /dev/null
+++ b/src/kpackage/private/packageloader_p.h
@@ -0,0 +1,60 @@
+/*
+ *   Copyright 2010 Ryan Rix <ry@n.rix.si>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Library General Public License as
+ *   published by the Free Software Foundation; either version 2, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details
+ *
+ *   You should have received a copy of the GNU Library General Public
+ *   License along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef KPACKAGE_PACKAGELOADER_P_H
+#define KPACKAGE_PACKAGELOADER_P_H
+
+#include "packagestructure.h"
+#include <KPluginMetaData>
+
+namespace KPackage
+{
+
+class PackageLoaderPrivate
+{
+public:
+    PackageLoaderPrivate()
+        : isDefaultLoader(false),
+          packageStructurePluginDir(QStringLiteral("kpackage/packagestructure"))
+    {
+    }
+
+    static QSet<QString> knownCategories();
+    static QString parentAppConstraint(const QString &parentApp = QString());
+
+    static QSet<QString> s_customCategories;
+
+    QHash<QString, QPointer<PackageStructure> > structures;
+    bool isDefaultLoader;
+    QString packageStructurePluginDir;
+    // We only use this cache during start of the process to speed up many consecutive calls
+    // After that, we're too afraid to produce race conditions and it's not that time-critical anyway
+    // the 20 seconds here means that the cache is only used within 20sec during startup, after that,
+    // complexity goes up and we'd have to update the cache in order to avoid subtle bugs
+    // just not using the cache is way easier then, since it doesn't make *that* much of a difference,
+    // anyway
+    int maxCacheAge = 20;
+    qint64 pluginCacheAge = 0;
+    QHash<QString, QList<KPluginMetaData>> pluginCache;
+};
+
+}
+
+#endif
+