bind2nd and a const reference.

I'm trying to use the for_each(), bind2nd(), mem_fun() combination
below to perform a for loop, but I get the compiler warnings and error
below.
If I replace the Update( const T& hint ) function with Update( T
hint ), everything compiles just fine. Or, if I replace the for_each()
loop with a for() loop, everything works.

Why doesn't the for_each() loop work with the constant-reference
version of the update function?

std::list< myclass* > mylist;

void SomeFunc( const T& in )
{
    // errors
    std::for_each( mylist.begin(),
                   mylist.end(),
                   std::bind2nd( std::mem_fun( &myclass::Update ),
in ) );

    // This works
    std::list< myclass* >::iterator it( mylist.begin() );
    for( it; it != mylist.end(); ++it )
    {
         ( *it )->Update( in );
    }
}

class myclass
{
    void Update( const T& hint )
    {
    }

    void Update2( T hint )
    {
    }
}

Warning 1 warning C4181: qualifier applied to reference type; ignored
C:\Program Files\Microsoft Visual Studio 8\VC\ce\include\functional
312
Warning 2 warning C4181: qualifier applied to reference type; ignored
C:\Program Files\Microsoft Visual Studio 8\VC\ce\include\functional
312
Error 3 error C2529: '_Right' : reference to reference is illegal C:
\Program Files\Microsoft Visual Studio 8\VC\ce\include\functional 312

Thanks,
PaulH