Slightly related meta-fix I would request once more: please silence all warnings out of boost python binding, at least in the interface users will use. (In fact the same applies to all of boost, but I only recall seeing problems with python bits.) In past releases there have been many trivial warnings such as unused arguments that would have been simple to silence. As they tend to drown us in "instantiated here" type of chains for each actual warning, it is very difficult to see any real problems with our own code. We compile with GCC using -ansi -pedantic -W -Wall and a few other warning options, and it is not unusual that the python bindings do not either compile at all (have to remove -pedantic), or swamp us with warnings. I'd recommend that boost uses the above options + -Werror with GCC to make sure no warnings can creep into the release. If you need a list of outstanding problems with most recent release or some current release candidate, please let me know. Lassi -- I'm not young enough to know everything. --Oscar Wilde