VS2010 compile error in lambda, if posix_time.hpp is included.

[fzuuzf@…]

boost 1.46.1 compiles ok.
boost 1.48 gives:
"error C2663: 'std::vector<_Ty>::at' : 2 overloads have no legal conversion for 'this' pointer"

See annotations in attached testcase.

Compiler error?

[anonymous]

#include "stdafx.h"
#include <boost/date_time/posix_time/posix_time.hpp>

#include <vector>
#include <memory>

class A {};

class B: public std::vector<std::shared_ptr<A>> {
public:

	void f() {
		unsigned u_(0);

		auto lambda_([&]() {
			at(u_);		// boost1.48: error C2663: 'std::vector<_Ty>::at' : 2 overloads have no legal conversion for 'this' pointer
					// boost1.46.1: ok
			this->at(u_);	// ok
		});

	}
};

[anonymous]

Simplified testcase,
regression also shows without shared_ptr<>:

#include <boost/date_time/posix_time/posix_time.hpp>

class A {};

class B: public std::vector<A> {
public:
	void f() {
		unsigned u_(0);

		auto lambda_([&]() {
			at(u_);		// boost1.48: error C2663: 'std::vector<_Ty>::at' : 2 overloads have no legal conversion for 'this' pointer
					// boost1.46.1: ok
			this->at(u_);	// ok
		});

	}
};