Boost::UBLAS problems

Hi Folks, I have been experimenting with the new BOOST linear algebra section boost/numeric/ublas I have been running the examples and benchmark programs bench1 and test1 provided with the distribution. Both programs compile and link perfectly they also run to completion; but they only run one time ! I cannot run a second time. It looks like the executable isn't even starting. Has anyone found this problem and found the solution I am using Microsoft VC6 compiler on a PC Thanks...Pecos