diff --git a/layout/base/nsPresShell.cpp b/layout/base/nsPresShell.cpp
--- a/layout/base/nsPresShell.cpp
+++ b/layout/base/nsPresShell.cpp
@@ -6899,7 +6899,17 @@
 PRBool
 PresShell::DoReflow(nsIFrame* target, PRBool aInterruptible)
 {
+#if 0
   fprintf(stderr, "start PresShell::DoReflow (%d)\n", aInterruptible);
+
+  if (aInterruptible == 0) {
+    nsCAutoString spec;
+    mDocument->GetDocumentURI()->GetSpec(spec);
+    if (spec.get()[0] == 'h') {
+      printf("http non-interruptible reflow thing\n");
+    }
+  }
+#endif
 
   nsIFrame* rootFrame = FrameManager()->GetRootFrame();
 
@@ -7024,8 +7034,9 @@
   }
 
   mPresContext->SetInterruptState(PR_FALSE);
+#if 0
   fprintf(stderr, "end   PresShell::DoReflow (%d)\n\n", interrupted);
-
+#endif
   return !interrupted;
 }
 
diff --git a/widget/src/gtk2/nsAppShell.cpp b/widget/src/gtk2/nsAppShell.cpp
--- a/widget/src/gtk2/nsAppShell.cpp
+++ b/widget/src/gtk2/nsAppShell.cpp
@@ -151,5 +151,6 @@
 nsAppShell::GetHasPendingInputEvent(PRBool *aResult)
 {
     *aResult = gdk_events_pending();
+    //fprintf(stderr, "%d events pending\n", *aResult);
     return NS_OK;
 }