Garbage chars on user pages

I have a problem with Authcache and users page, so user/login user/register user/password on these pages anonymous get just garbage chars, like

�� IH�M �J: 0 q ��3&?6UH��,)����s��~����s'� 83S J��<��5#� �j%�� �%^ZQ�B t�U�H �P�� �@ �b ��qZX ���:!�/.N�� 9}}���zyz��5���K�������~E U`�x�2�jId;��1�� ����� ���H ��o#�'��eQ% D1��W٢ + ܟ�] _] o|?P��I� �Q [�z�q�y#DدH� ��܄� ƅ�!�1`�Wq� Ґ#>]ꈾ%n�OK��4SXB\ˏ� �pa)T<)�CC�1+��č�C +�Gx ^����"�Иɏ �|X �@ IP�L�� n_��\+?Zӌ! �[m�\g�f �� �%U� ��B\��~,,��P�XZ ��p��X �@��� ��hhw��J� ���c�y�s�} �,lY����� � U��X)�hpy���

I use also ajax_register and for the same issue it doesn't works, when I disable Authcache all work nice

I have also Varnish, Memcache and Filecache installed with this configuration

// Add Varnish as the page cache handler.
$conf['cache_backends'] = array('sites/all/modules/varnish/varnish.cache.inc');
$conf['cache_class_cache_page'] = 'VarnishCache';
// Drupal 7 does not cache pages when we invoke hooks during bootstrap. This needs
// to be disabled.
$conf['page_cache_invoke_hooks'] = FALSE;

$conf['reverse_proxy'] = true;
$conf['page_cache_invoke_hooks'] = false;
$conf['cache'] = 1;
$conf['cache_lifetime'] = 0;
$conf['page_cache_maximum_age'] = 21600;
$conf['reverse_proxy_header'] = 'HTTP_X_FORWARDED_FOR';
$conf['reverse_proxy_addresses'] = array('127.0.0.1');
$conf['omit_vary_cookie'] = true;

// Memcache

$conf['cache_backends'][] = 'sites/all/modules/memcache/memcache.inc';
$conf['cache_backends'][] = 'sites/all/modules/authcache/authcache.inc';
$conf['cache_default_class'] = 'MemCacheDrupal';
$conf['memcache_key_prefix'] = 'Memcache';
$conf['memcache_servers']  = array('127.0.0.1:11211' => 'default');
//$conf['cache_class_cache_form'] = 'DrupalDatabaseCache';
$conf['cache_inc'] = 'sites/all/modules/authcache/authcache.inc';

// Filecache
$conf['cache_backends'] = array('sites/all/modules/filecache/filecache.inc');
$conf['cache_default_class'] = 'DrupalFileCache';

I already set user* to exclude pages from cache.

Any suggestions ?

thanks