I compiled 1.2.6 version and switched to it, here's my new nginx -V:

nginx version: nginx/1.2.6
built by gcc 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1)
TLS SNI support enabled
configure arguments: --prefix=/opt/nginx-1.2.6 --with-http_flv_module --with-http_ssl_module --with-http_gzip_static_module --add-module=/root/src/ngx_http_auth_pam_module-1.2 --with-debug


but *same* problem....................................... I'm really really confused..................................