tinyE: In the U.S. in the 1800's, maybe later, faggot was a log. There is a cute joke about it in Rustlers Rhapsody.
I hate to dig that specific part of the subject up, particularly in a thread that has nothing to do with it initially ... but I somrtimes think I have to 'spread the word'.
An old french saying (middle age old) is 'To smell like faggot' (sentir le fagot) which means 'To be suspected of heresy' => because as many people may know, such accusations were solved by burning the victims (I won't use the term culprits) at the stake. I think you understand the link.
Now, concerning gay people, I don't know if it's related to this 'heresy metaphor' but I think it's likely the case ... so calling people fags
can just be like telling them they should be burned alive. I hope anyone will remember this the next time they want to use the word 'fag'.
Edit : Forgot to wish OP will have a memorable trip over there :).