textstat.js problem from "keyword-statistics" plugin

I am having a problem with a rapid recurring dialog box, so rapid that the system seems to stall. Can’t even logout. Pressing “Continue” or “Stop Script” is uneffective.

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.

Script: http://hostname.org/blog/wp-content/plugins/keyword-statistics/textstat.js:46
“
How is it best to handle this?