Script Continuously Firing

I have attempted to upload this plugin to 3 different websites - all have the same problem.

They are all wordpress 3.0.1

When activated the plugin starts to continuously fire. The link at the top of the dashboard is repeated and I'm unable to access the plugin area to deactive - I have to access the DB to unplug it.

I get the following message:

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.