Fluent NHibernate. L2 cache and lazy initialization.

Question

All my references are configured to be lazy loaded like this:

References(x => x.SomeProperty).ReadOnly().LazyLoad();

Everything works fine. Proxies are created. Now I added the following line in each entity mapping class:

Cache.ReadWrite();

and enabled L2 cache like this:

var fluentConfiguration = Fluently.Configure().Database(MsSqlConfiguration.MsSql2005.
            ConnectionString(connectionStringBuilderAction).
            Cache(builder => builder.UseQueryCache().ProviderClass<HashtableCacheProvider>()));

After enabling L2 cache my references are not loaded at all. Proxies are not created. The value of SomeProperty is null.

What did I miss?