Priority scale is scrolled by 1 point with middle mouse button

ublexec.glade

@@ -70,7 +70,7 @@
   <object class="GtkAdjustment" id="adjustment1">
     <property name="upper">19</property>
     <property name="step-increment">1</property>
-    <property name="page-increment">10</property>
+    <property name="page-increment">1</property>
   </object>
   <object class="GtkBox" id="boxColor">
     <property name="visible">True</property>
@@ -803,7 +803,7 @@ translated and supported by community.</property>
                                   <object class="GtkLabel">
                                     <property name="visible">True</property>
                                     <property name="can-focus">False</property>
-                                    <property name="label" translatable="yes">User Name:</property>
+                                    <property name="label" translatable="yes">Username:</property>
                                     <property name="wrap">True</property>
                                     <property name="xalign">0</property>
                                   </object>