Firefox Hung Rated 1 out of 5 stars

Same problem I installed and rebooted firefox. Firefox immediately hung trying to execute the script. Worked after manually delete the xpi from my profile folder.
I am using Firefox 16.0.1 for Ubuntu

This review is for a previous version of the add-on (1.2.1-signed). 

Please try the version 1.3 to see if there is any improvements.