Rated 5 out of 5 stars

Got it.
Tracked it down to FastestFox add-on.
Uninstalled it and FireFTP works just fine.

This review is for a previous version of the add-on (1.99.2.1-signed). 

I'm currently talking with the author of FasterFox to find a solution - seems to be a problem on their end...

Rated 3 out of 5 stars

Yeah, it looks like some other add-on is interfering.
I logged in to a different profile and it works there.
I'll have to find out, which add-on it is.

This review is for a previous version of the add-on (1.99.2.1-signed). 

Rated 1 out of 5 stars

It doesn't work for me in Firefox 4.
No directory is displayed. All accounts lost. Can't create new account. Clicking on "Edit" doesn't do anything.

This review is for a previous version of the add-on (1.99.2.1-signed).