Paula you're not on your own because the forum is exactly the same for me. I've done all I can, but don't intend trying to change anything else, because if it works everywhere else it should work on here too. I think it's Yuku because I don't have a problem anywhere else.
I tried to reply to a pm last night and the little black circle was going backwards all the time, in the end I minimised the page and just kept checking back till the pm went. x