[Plugin: Facebook Connect] website extremely slows down when this plugin activated…

Hi all,

I have put a query time counter on the footer of the pages and it increases to 2 seconds when this plugin is activated. It was 0,3 seconds before this plugin.I think there’s something wrong with my installatin. What could it be?

http://ww.wp.xz.cn/extend/plugins/wp-facebook-connect/