--- a/src/common/buffer.cc	Wed Apr 23 08:54:29 2008 -0700
+++ b/src/common/buffer.cc	Wed Apr 23 09:05:18 2008 -0700
@@ -418,7 +418,7 @@
       m_zeroAreaStart += delta;
       m_zeroAreaEnd += delta;
       m_end += delta;
-      m_start = 0;
+      m_start += delta;
 
       m_end += end;