[Plugin: HyperDB] Hyper DB with Master-Master Mysql error after installation

Hi All:

I just installed wordpress 3.3.2 and hyperdb plugin. MySQL is a Master-Master replication working fine. The first time i access to the admin page seemt to work fine. The blog page is loaded without error.

Eveything changes when i try to write on the system. The comment doesn´t show up and from this moment, every url i type redirect me to /wp-admin/install.php and tries to do the firts installation. If i enter the blog first data, the installer tells me “WordPress seems to be installed”. The error seems to be because the config is wrong. When i write in the database the system locks the tables, and do nothig good until i flush hosts in my mysql installation.

My db-config.php is

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Thanks for any help you provide.
Alberto

http://wordpress.org/extend/plugins/hyperdb/