I use passport.js to handle auth on my nodejs + express.js application. I setup a LocalStrategy to take users from mongodb

My problems is that users have to re-authenticate when I restart my node server. This is a problem as I am actively developing it and don't wan't to login at every restart... (+ I use node supervisor)

Here is my app setup :

app.configure(function(){
    app.use('/static', express.static(__dirname + '/static'));
    app.use(express.bodyParser());
    app.use(express.methodOverride());
    app.use(express.cookieParser());
    app.use(express.session({secret:'something'}));
    app.use(passport.initialize());
    app.use(passport.session());
    app.use(app.router);
});

And session serializing setup :

passport.serializeUser(function(user, done) {
    done(null, user.email);
});

passport.deserializeUser(function(email, done) {
    User.findOne({email:email}, function(err, user) {
        done(err, user);
    });
});

I tried the solution given on this blog using connect-mongodb without success

app.use(express.session({
    secret:'something else',
    cookie: {maxAge: 60000 * 60 * 24 * 30}, // 30 days
        store: MongoDBStore({
        db: mongoose.connection.db
    })
}));