Perhaps you would like to share how. other people might be running into the same issue as well...
Apologies for the delay, could not reproduce the intermittent problem until today.
Definitely from my end, Putty worked when FileZilla wouldn’t.
I updated FileZilla from 2.2.31 to 3.0.3 and it appears all is well.
Side note, the above wiki link for Releasing Contribs shows a blank page today. (Maybe someone’s revamping the page?)