diff --git a/mozilla/content/base/src/nsDocumentViewer.cpp b/mozilla/content/base/src/nsDocumentViewer.cpp
index a4385606f42..12c520e37ba 100644
--- a/mozilla/content/base/src/nsDocumentViewer.cpp
+++ b/mozilla/content/base/src/nsDocumentViewer.cpp
@@ -354,6 +354,8 @@ DocumentViewerImpl::Init(nsNativeWidget aNativeParent,
         // Make shell an observer for next time
         mPresShell->BeginObservingDocument();
 
+//XXX I don't think this should be done *here*; and why paint nothing
+//(which turns out to cause black flashes!)???
         // Resize-reflow this time
         mPresShell->InitialReflow(width, height);
 
diff --git a/mozilla/layout/base/nsDocumentViewer.cpp b/mozilla/layout/base/nsDocumentViewer.cpp
index a4385606f42..12c520e37ba 100644
--- a/mozilla/layout/base/nsDocumentViewer.cpp
+++ b/mozilla/layout/base/nsDocumentViewer.cpp
@@ -354,6 +354,8 @@ DocumentViewerImpl::Init(nsNativeWidget aNativeParent,
         // Make shell an observer for next time
         mPresShell->BeginObservingDocument();
 
+//XXX I don't think this should be done *here*; and why paint nothing
+//(which turns out to cause black flashes!)???
         // Resize-reflow this time
         mPresShell->InitialReflow(width, height);
 
diff --git a/mozilla/layout/base/src/nsDocumentViewer.cpp b/mozilla/layout/base/src/nsDocumentViewer.cpp
index a4385606f42..12c520e37ba 100644
--- a/mozilla/layout/base/src/nsDocumentViewer.cpp
+++ b/mozilla/layout/base/src/nsDocumentViewer.cpp
@@ -354,6 +354,8 @@ DocumentViewerImpl::Init(nsNativeWidget aNativeParent,
         // Make shell an observer for next time
         mPresShell->BeginObservingDocument();
 
+//XXX I don't think this should be done *here*; and why paint nothing
+//(which turns out to cause black flashes!)???
         // Resize-reflow this time
         mPresShell->InitialReflow(width, height);