--- panel-plugin/cpu.c.orig	2007-08-17 21:26:02.000000000 +0200
+++ panel-plugin/cpu.c	2007-08-17 23:29:16.000000000 +0200
@@ -693,6 +693,11 @@
     GtkWidget *da = base->m_DrawArea;
     int w, h;
 
+    if (xfce_panel_plugin_get_orientation (base->plugin) ==
+            GTK_ORIENTATION_VERTICAL)
+        if (base->m_Values != base->m_DrawArea->allocation.width+1)
+            SetHistorySize (base, base->m_DrawArea->allocation.width+1);
+
     w = da->allocation.width;
     h = da->allocation.height;
 
@@ -901,7 +906,11 @@
     base->m_TimeoutID = g_timeout_add (update, (GtkFunction) UpdateCPU, base);
 
     UserSetSize (base);
-    SetHistorySize (base, base->m_Width);
+    if (xfce_panel_plugin_get_orientation (base->plugin) ==
+            GTK_ORIENTATION_HORIZONTAL)
+        SetHistorySize (base, base->m_Width);
+    else
+        SetHistorySize (base, base->m_DrawArea->allocation.width+1);
 }
 
 void