diff -r f93c875b566e -r 3a60ebea00d0 uiacceltk/hitchcock/coretoolkit/src/huicanvaswspainter.cpp
--- a/uiacceltk/hitchcock/coretoolkit/src/huicanvaswspainter.cpp	Tue May 25 13:39:57 2010 +0300
+++ b/uiacceltk/hitchcock/coretoolkit/src/huicanvaswspainter.cpp	Wed Jun 09 10:41:25 2010 +0300
@@ -566,6 +566,12 @@
             
             // Clip drawing to update area. This seems to improve performance although
             // it may depend on used HW.
+
+            // Set position delta to zero, otherwise updateregion is adjusted incorrectly
+            // in SW mode. No effect on HW mode as it does not adjust the updateregion in
+            // EnableUpdateRegion call...
+            TPoint delta(0,0);
+            iCanvasWsGc->SetPositionDelta(delta);
             iCanvasWsGc->EnableUpdateRegion(iCommandBuffers[cb]->iUpdateRegion, aClearBeforeHandlingBuffers);
 
             #ifdef HUI_DEBUG_PRINT_PERFORMANCE_INTERVAL