problems with toolsets in boost-build

When trying a compile a program with bjam, the following error message appears:

/usr/share/boost-build/tools/gcc.jam:106: in gcc.init from module gcc
error: toolset gcc initialization:
error: version '3.4' requested but 'g++-3.4' not found and version '4.6.1' of default 'g++' does not match
error: initialized from /usr/share/boost-build/build/project.jam:886
/usr/share/boost-build/build/toolset.jam:38: in toolset.using from module toolset
/usr/share/boost-build/build/project.jam:886: in using from module Jamfile</home/isaia/Dropbox/Galatolo-Nisoli/GN-Comput_inv_1D/code-1.0-double>
Jamroot:1: in modules.load from module Jamfile</home/isaia/Dropbox/Galatolo-Nisoli/GN-Comput_inv_1D/code-1.0-double>
/usr/share/boost-build/build/project.jam:314: in load-jamfile from module project
/usr/share/boost-build/build/project.jam:62: in load from module project
/usr/share/boost-build/build/project.jam:168: in project.find from module project
/usr/share/boost-build/build-system.jam:569: in load from module build-system
/usr/share/boost-build/kernel/modules.jam:283: in import from module modules
/usr/share/boost-build/kernel/bootstrap.jam:142: in boost-build from module
/usr/share/boost-build/boost-build.jam:8: in module scope from module

I think that the toolset files should be set to the default of the distribution.

Best regards
Isaia