Redirect looping

By using chrome for login with facebook, it doesn't work. The error message is redirect looping. Even I clear the cookie, the problems still exists. pls help.

The problems seem to be more serious. From the time now, IE, chrome & safari that cannot be login. It affects to administrative page. All cannot login... ........ HELP~~~~~

Finally, it was fixed.

The problem is due to Joomla User plugin. As we need to use the fbconnect components, we may disable the plugin carelessly.
Normally, you login administrative panel and disable Joomla User plugin.
When the other users login, the effect for different browers is / are:

redirect again and again for a long long time

get redirect loop error

white page

Error http:500

At this time if you logout from administrative panel, you will not able to login again from front-end and back-end.

The solution is to enable the Joomla User plugin.
if you can't login to administrative panel, you need go to the database.
Find the database of joomla and go to the table XXX_plugins (XXX is the prefix of the database when you install joomla).Then you can find User - Joomla!, change the published field from 0 to 1. Then, normally you can login again.

Hope it can help!!