just use the url tags for ftp urls
Ok I see the problem. I haven't seen that in other sites and didn't try it here. It is a bug in the markup processor as far as I am concerned, which should just turn the url bracketed tags into an a href tag.
Until they fix it or someone comes up with a clever workround, you can either leave it untagged, in which case the reader has to copy'n'past th elink in, or put tag it anyway, and leave the reader to remove the extraneous http:// from the front of the bad link.

Putting the links in with and without the <A> tags doesn't work either.
Rod