Just wanted to say that VC70 got problems with BOOST_FOREACH. Apparantly an internal compiler bug sometimes generates the wrong code and causes a "Run- Time check failure #2 - Stack around ... was corrupted". It has happened to me twice now in completly different contexts. In both cases there is no problem if I compile with VC71 or if I replace BOOST_FOREACH with a normal for loop. Unfortunatly I can't find any small example which reproduces the problem. In both cases I can see in the debugger that code uses the wrong stack offset for a local variable.