CVS commit by waba: 

Only render the visible desktop when doing timed wallpaper changes (Slide show)
(BR51063)


  M +4 -2      bgmanager.cc   1.70.2.2


--- kdebase/kdesktop/bgmanager.cc  #1.70.2.1:1.70.2.2
@@ -531,4 +531,6 @@ void KBackgroundManager::slotTimeout()
        NumDesks = 1;
 
+    int edesk = effectiveDesktop();
+
     for (int i=0; i<NumDesks; i++)
     {
@@ -551,5 +553,5 @@ void KBackgroundManager::slotTimeout()
         }
 
-        if (change)
+        if (change && (i == edesk))
         {
             running[i] = r->hash();