diff -r cfbabca1b4e9 -r 38e1d4383262 lemon/cplex.cc
--- a/lemon/cplex.cc	Fri Feb 03 05:55:39 2012 +0100
+++ b/lemon/cplex.cc	Sun May 06 17:18:39 2012 +0200
@@ -470,8 +470,6 @@
     CPXfreeprob(cplexEnv(),&_prob);
     int status;
     _prob = CPXcreateprob(cplexEnv(), &status, "Cplex problem");
-    rows.clear();
-    cols.clear();
   }
 
   void CplexBase::_messageLevel(MessageLevel level) {