I upgraded my libstdc++ and libgcc1 on i386 from 4.1.0-1+b1 to 4.1.1-5 (currently in testing) and got same problems, so it looks like real bug of 4.1.1. I couldn't test in amd64 with libstdc++ 4.1.0 cos it is already disappeared from testing. Suggest place libstdc++ of 4.0 version to distro untill bug is fixed. Sergey Nivarov