Profile user form of category is not saving values with quick tabs configuration

I've made blocks using hook_block_info() and hook_block_view() with quick tabs configuration and called user profile forms there with profile category like- Personal Details, Locations etc. But problem is this: second form under second tab is not submitting any value and also so on for the others except first form under the first quick tab!

A part of codes is like this in the block to invoke:
$block['subject'] = "User Information";
module_load_include('inc', 'user', 'user.pages');
$output = drupal_render(drupal_get_form('user_profile_form', $user, 'main'));
$block['content'] = $output;

Am I doing any thing wrong? Please Help me...