Regression tests for VC7.0 show a recurrent problem throughout the library with a specific facility in boost/multi_index/detail/allocator.hpp. My hunch is that this should be easy to fix, but it is not productive to try variations on the main CVS and wait for the regression tests outputs. Anyone with VC7.0 volunteering to help with porting of Boost.MultiIndex to VC7.0? If so please contact me and I'll provide you with all the relevant info and some suggestions of things to try. I think this souldn't be to hard to fix. Thanx in advance. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo