Hi there!
I have installed Simple Facebook Connect plugin to my friend's blog yesterday - http://blog.jedzok.com . I found it amazing, played a lot with it, but I couldn't get its SFC-Comments sub-plugin to work.
Problem description:
After clicking on the 'Login with facebook' button and logging in, my fb homepage displays in the dialog window and the blog page remains unchanged.
I went through dozens of support threads here and tried some stuff (so that I don't have any other fb connect plugins installed anymore), but I still can't figure it out.
Any help appreciated, thanks!