I had no trouble installing this at all, and it did what it said. However, my site became very unstable, causing me to have to log into admin about every two minutes. On the front end it kept giving people a "Joomla, site is down, notify admistrator" message. I really didn't think it could be because of this plugin, but it coinsided with the problem, so I uninstalled the plugin, and that corrected the problem immediatly. Perhaps there was another way to fix the problem, but I had not time to waste figuring it out, and uninstalling did the trick.