Rated 4 out of 5 stars

I am using Dictionary switcher with Thunderbird 17 on Kubuntu 12.04. I can reproducibly get the problem with a hanging app (max CPU load) when I turn on the "autodetect" feature. (extensions.dictionary-switcher.autodetect) and just start typing a few letters into the subject line of a newly opened e-mail.
If I turn off the autodetect feature, I can do the same thing without any problem. (Tested 3 times both ways.)

Sorry to post here, as I cannot see how to contact the developers, nor where to file a bug or find the forum -- at least there is no hint on this web page.

This review is for a previous version of the add-on (1.3.2.1-signed.1-signed).