diff --git a/doomsday/libdeng2/include/de/vector.h b/doomsday/libdeng2/include/de/vector.h
index 85929e82bc..269b3bc70a 100644
--- a/doomsday/libdeng2/include/de/vector.h
+++ b/doomsday/libdeng2/include/de/vector.h
@@ -55,9 +55,6 @@ namespace de
         operator Vector2<ddouble> () const {
             return Vector2<ddouble>(ddouble(x), ddouble(y));
         }
-        operator String () const {
-            return asText();
-        }
         Vector2 operator + (const Vector2& other) const {
             return Vector2(x + other.x, y + other.y);
         }
@@ -158,9 +155,6 @@ namespace de
         operator Vector3<ddouble> () const {
             return Vector3<ddouble>(Vector2<Type>::x, Vector2<Type>::y, z);
         }
-        operator String () const {
-            return asText();
-        }
         Vector3 operator + (const Vector3& other) const {
             return Vector3(Vector2<Type>::x + other.x, Vector2<Type>::y + other.y, z + other.z);
         }
@@ -266,9 +260,6 @@ namespace de
         operator Vector4<ddouble> () const {
             return Vector4<ddouble>(Vector3<Type>::x, Vector3<Type>::y, Vector3<Type>::z, w);
         }
-        operator String () const {
-            return asText();
-        }
         Vector4 operator + (const Vector4& other) const {
             return Vector4(Vector3<Type>::x + other.x, Vector3<Type>::y + other.y, 
                 Vector3<Type>::z + other.z, w + other.w);
diff --git a/doomsday/tests/tests.pro b/doomsday/tests/tests.pro
index e50bb29fa6..b0aa1c8964 100644
--- a/doomsday/tests/tests.pro
+++ b/doomsday/tests/tests.pro
@@ -4,6 +4,6 @@ SUBDIRS = \
     #basiclink \
     #record \
     script \
-    #vectors
+    vectors
 
 #OTHER_FILES += testapp.de
diff --git a/doomsday/tests/vectors/main.cpp b/doomsday/tests/vectors/main.cpp
new file mode 100644
index 0000000000..7f43aa41e3
--- /dev/null
+++ b/doomsday/tests/vectors/main.cpp
@@ -0,0 +1,84 @@
+/*
+ * The Doomsday Engine Project
+ *
+ * Copyright (c) 2009-2012 Jaakko Keränen <jaakko.keranen@iki.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, 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 General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <de/Vector>
+#include <QDebug>
+
+using namespace de;
+
+int main(int, char**)
+{
+    try
+    {
+        Vector2f a(1, 2.5);
+        Vector3f b(3, 5, 6);
+
+        // Note: Using QDebug because no de::App (and therefore no log message
+        // buffer) is available.
+
+        qDebug() << "Sizeof Vector2f:" << sizeof(a);
+        qDebug() << "Sizeof Vector3f:" << sizeof(b);
+
+        qDebug() << "Direct access to members:";
+        qDebug() << a.x << a.y;
+        qDebug() << b.x << b.y << b.z;
+
+        qDebug() << "First operand defines type of result:";
+
+        qDebug() << "Vector2f + Vector3f:" << (a + b).asText();
+        qDebug() << "Vector3f + Vector2f:" << (b + a).asText();
+
+        Vector2i c(6, 5);
+
+        // This would downgrade the latter to int; won't do it.
+        //qDebug() << "Vector2i + Vector2f (converted to int!): " << (c + a).asText();
+        
+        qDebug() << "Vector2i:" << c.asText();
+        qDebug() << "Vector2f + Vector2i:" << (a + c).asText();
+
+        a += b;
+        b += a;
+        qDebug() << "After sum:" ;
+        qDebug() << "a:" << a.asText() << "b:" << b.asText();
+        
+        qDebug() << "a > b: " << (a > b);
+        qDebug() << "b > a: " << (b > a);
+        
+        Vector2f s(1, 1);
+        Vector3f t(2, 2, 2);
+        qDebug() << "s: " << s.asText() << " t:" << t.asText();
+        qDebug() << "s > t: " << (s > t);
+        qDebug() << "t > s: " << (t > s);
+        qDebug() << "s < t: " << (s < t);
+        qDebug() << "t < s: " << (t < s);
+        t.z = -100;
+        qDebug() << "t is now: " << t.asText();
+        qDebug() << "s > t: " << (s > t);
+        qDebug() << "t > s: " << (t > s);
+        qDebug() << "s < t: " << (s < t) << " <- first operand causes conversion to Vector2";
+        qDebug() << "t < s: " << (t < s);
+    }
+    catch(const Error& err)
+    {
+        qWarning() << err.asText() << "\n";
+    }
+
+    qDebug() << "Exiting main()...\n";
+    return 0;        
+}
diff --git a/doomsday/tests/vectors/vectors.pro b/doomsday/tests/vectors/vectors.pro
new file mode 100644
index 0000000000..42a7370af2
--- /dev/null
+++ b/doomsday/tests/vectors/vectors.pro
@@ -0,0 +1,15 @@
+include(../config_test.pri)
+
+TEMPLATE = app
+TARGET = test_vectors
+
+SOURCES += main.cpp
+
+macx {
+    cfg.files = $$DENG_CONFIG_DIR/deng.de
+    cfg.path = Contents/Resources/config
+
+    QMAKE_BUNDLE_DATA += cfg
+
+    macDeployTest($$TARGET)
+}