Rated 5 out of 5 stars

yazan: ksuuk tarih: Eki. 2, 2011 ·

From developer homepage - http://mozext.achimonline.de/signatureswitch_download.php

ChangeLog
v1.6.9 (01.10.2011)
* changed maxVersion to 7.*

This review is for a previous version of the add-on (1.6.8).