check ip in mysql

I've been trying to use the check ip feature with the mysql version. my problem is that when a new entry is written to the database, the old info is erased. how can i fix this. poll_log works fine, but poll_ip keep resetting.

I made it work. I don't know why this works but it does. I double slashed line 283 of class_poll.php which says:

For some reason this line was responsible for deleting all of the info in the poll_ip database.