Every time I click on a user name from the "user management" section in the backend I get the message "hacking attempt". What causes that and where do I look to fix it?

I am having to go into phpmyadmin to change data for now. Thanks!

Did a little digging and figured this out. I have the SMF plug-ins installed and they generate this message. I unpublished them and was able to open the user details. Everything works now.