diff --git a/docs/index.html b/docs/index.html
index 8027b8a..3615953 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -9,7 +9,7 @@
 
 <div align=right class=lastmod>
 <!-- hhmts start -->
-Last Modified: Sun Oct 17 09:20:32 UTC 2010
+Last Modified: Sun Oct 17 09:25:27 UTC 2010
 <!-- hhmts end -->
 </div>
 
@@ -33,7 +33,7 @@ Python PDF parser and analyzer
   <ul>
     <li> <a href="#pdf2txt">pdf2txt.py</a>
     <li> <a href="#dumppdf">dumppdf.py</a>
-    <li> <a href="programming.html">PDFMiner as library</a>
+    <li> <a href="programming.html">PDFMiner API</a>
   </ul>
 <li> <a href="#changes">Changes</a>
 <li> <a href="#todo">TODO</a>
diff --git a/pdfminer/layout.py b/pdfminer/layout.py
index bc93ff0..84e13f2 100644
--- a/pdfminer/layout.py
+++ b/pdfminer/layout.py
@@ -599,6 +599,7 @@ class LTAnalyzer(LTContainer):
                     (max(obj1.y1,obj2.y1) - min(obj1.y0,obj2.y0)) -
                     (obj1.width*obj1.height + obj2.width*obj2.height))
         textboxes = textboxes[:]
+        # XXX this is slow when there're many textboxes.
         while 2 <= len(textboxes):
             mindist = INF
             minpair = None