diff --git a/calendar/modules/ui/canvas/src/nsCalCommandCanvas.cpp b/calendar/modules/ui/canvas/src/nsCalCommandCanvas.cpp
index ccff3c3a99b..0641c00cf84 100644
--- a/calendar/modules/ui/canvas/src/nsCalCommandCanvas.cpp
+++ b/calendar/modules/ui/canvas/src/nsCalCommandCanvas.cpp
@@ -119,11 +119,7 @@ nsresult nsCalCommandCanvas :: Init()
   
   fm->GetWidth(text,width);
 
-  float f;
-
-  GetWidget()->GetDeviceContext()->GetTwipsToDevUnits(f);
-
-  rect.width = width * f;
+  rect.width = width ;
 
   mStaticTextField->SetReadOnly(PR_TRUE);
 
@@ -206,13 +202,10 @@ nsresult nsCalCommandCanvas :: SetBounds(const nsRect &aBounds)
   nsXPFCCanvas::SetBounds(aBounds);
   nsRect rect = aBounds;
   nscoord width = 0;
-  float f = 0.0;
 
 
   if (mStaticTextField) {
 
-    mStaticTextField->GetDeviceContext()->GetTwipsToDevUnits(f);
-
     nsString text("COMMAND: ");
 
     nsFont font("Times", NS_FONT_STYLE_NORMAL,
@@ -227,7 +220,7 @@ nsresult nsCalCommandCanvas :: SetBounds(const nsRect &aBounds)
 
     fm->GetWidth(text,width);
 
-    rect.width = width * f;
+    rect.width = width ;
 
     mStaticTextField->Invalidate(PR_FALSE);
 
@@ -240,8 +233,8 @@ nsresult nsCalCommandCanvas :: SetBounds(const nsRect &aBounds)
 
     rect = aBounds;
 
-    rect.x += (width*f);
-    rect.width -= (width*f);
+    rect.x += (width);
+    rect.width -= (width);
 
     mTextField->Invalidate(PR_FALSE);
 
diff --git a/calendar/modules/ui/canvas/src/nsCalDayViewCanvas.cpp b/calendar/modules/ui/canvas/src/nsCalDayViewCanvas.cpp
index fb0d8055a40..37d3a82c5b6 100644
--- a/calendar/modules/ui/canvas/src/nsCalDayViewCanvas.cpp
+++ b/calendar/modules/ui/canvas/src/nsCalDayViewCanvas.cpp
@@ -289,19 +289,6 @@ nsEventStatus nsCalDayViewCanvas :: PaintForeground(nsIRenderingContext& aRender
 
       aRenderingContext.GetFontMetrics()->GetHeight(fm_height);
 
-      nsIDeviceContext * dc ;
-
-      float f = 0.0;
-      
-      dc = aRenderingContext.GetDeviceContext();
-      
-      dc->GetTwipsToDevUnits(f);
-
-      fm_height *= f;
-
-      NS_RELEASE(dc);
-            
-
       if (rect.height > fm_height)
       {
         // rndctx->SetColor(GetForegroundColor());
diff --git a/calendar/modules/ui/canvas/src/nsCalTimebarTimeHeading.cpp b/calendar/modules/ui/canvas/src/nsCalTimebarTimeHeading.cpp
index 420a6067cba..19686ddc242 100644
--- a/calendar/modules/ui/canvas/src/nsCalTimebarTimeHeading.cpp
+++ b/calendar/modules/ui/canvas/src/nsCalTimebarTimeHeading.cpp
@@ -96,19 +96,6 @@ nsEventStatus nsCalTimebarTimeHeading :: PaintForeground(nsIRenderingContext& aR
   aRenderingContext.GetFontMetrics()->GetHeight(height);
   aRenderingContext.GetFontMetrics()->GetWidth(*string,width);
 
-  nsIDeviceContext * dc ;
-
-  float f = 0.0;
-  
-  dc = aRenderingContext.GetDeviceContext();
-  
-  dc->GetTwipsToDevUnits(f);
-
-  NS_RELEASE(dc);
-
-  height *= f;
-  width *= f;
-
   /*
    * XXX: If we are too big, remove the Day of the week.  Need a better algorithm
    *      to use string who fits to begin with
@@ -119,7 +106,6 @@ nsEventStatus nsCalTimebarTimeHeading :: PaintForeground(nsIRenderingContext& aR
      pattern = "MMM dd\n";
      GetTimeContext()->GetDTFirstVisible()->strftime(pattern, &string);
      aRenderingContext.GetFontMetrics()->GetWidth(*string,width);
-     width *= f;
    }
 
   /*
diff --git a/calendar/modules/ui/canvas/src/nsCalTimebarUserHeading.cpp b/calendar/modules/ui/canvas/src/nsCalTimebarUserHeading.cpp
index 36e323479c5..2747252acec 100644
--- a/calendar/modules/ui/canvas/src/nsCalTimebarUserHeading.cpp
+++ b/calendar/modules/ui/canvas/src/nsCalTimebarUserHeading.cpp
@@ -91,19 +91,6 @@ nsEventStatus nsCalTimebarUserHeading :: PaintForeground(nsIRenderingContext& aR
   aRenderingContext.GetFontMetrics()->GetHeight(height);
   aRenderingContext.GetFontMetrics()->GetWidth(mUserName,width);
 
-  nsIDeviceContext * dc ;
-
-  float f = 0.0;
-  
-  dc = aRenderingContext.GetDeviceContext();
-  
-  dc->GetTwipsToDevUnits(f);
-
-  NS_RELEASE(dc);
-
-  height *= f;
-  width *= f;
-
   /*
    * center the text in our rect and draw it
    */
diff --git a/calendar/modules/ui/controller/src/nsCalMonthContextController.cpp b/calendar/modules/ui/controller/src/nsCalMonthContextController.cpp
index 4801fc958b2..d941c5d8d4e 100644
--- a/calendar/modules/ui/controller/src/nsCalMonthContextController.cpp
+++ b/calendar/modules/ui/controller/src/nsCalMonthContextController.cpp
@@ -319,16 +319,6 @@ void nsCalMonthContextController::PaintMiniCalElement(
 
     mRenderingContext->GetFontMetrics()->GetLeading(leading);
 
-    nsIDeviceContext * dc ;
-
-    float f = 0.0;
-  
-    dc = mRenderingContext->GetDeviceContext();
-  
-    dc->GetTwipsToDevUnits(f);
-
-    NS_RELEASE(dc);
-
     iY = iYTop + leading;
 
     mRenderingContext->DrawString(s, nsCRT::strlen(s), iX, iY, 100);
@@ -1688,17 +1678,6 @@ void nsCalMonthContextController::GetTextExtent(char *p, int iChars, int& iWidth
   fm->GetWidth(p,(nscoord)iWidth);
   fm->GetHeight((nscoord)iHeight);
 
-  nsIDeviceContext * dc ;
-
-  float f = 0.0;
-
-  dc = mRenderingContext->GetDeviceContext();
-
-  dc->GetTwipsToDevUnits(f);
-
-  NS_RELEASE(dc);
-
-  iWidth *= f;
 }
 
 
@@ -1755,18 +1734,6 @@ void nsCalMonthContextController::GetFontInfo(
         fm->GetWidth("0",m_iDigitWidth);
         fm->GetHeight(m_iDigitHeight);
 
-        nsIDeviceContext * dc ;
-
-        float f = 0.0;
-
-        dc = mRenderingContext->GetDeviceContext();
-
-        dc->GetTwipsToDevUnits(f);
-
-        NS_RELEASE(dc);
-
-        m_iDigitWidth *= f;
-
         /*
          *  The next few lines need to be replaced with some code that gets the 
          *  strings for every day of the week and computes the max width...
@@ -1777,8 +1744,6 @@ void nsCalMonthContextController::GetFontInfo(
 
         fm->GetWidth(sBuf,m_iMaxDOWColHdrWidth);
 
-        m_iMaxDOWColHdrWidth *= f;
-
     }
 
     /*