diff -r be7dd3a8d6a3 -r 4764031c082c lemon/clp.cc
--- a/lemon/clp.cc	Fri Jan 20 19:20:02 2012 +0100
+++ b/lemon/clp.cc	Sun May 06 16:52:11 2012 +0200
@@ -437,8 +437,6 @@
   void ClpLp::_clear() {
     delete _prob;
     _prob = new ClpSimplex();
-    rows.clear();
-    cols.clear();
     _col_names_ref.clear();
     _clear_temporals();
   }