Doh! just found out how to delete them, and where I was going wrong.
Innstead of holding the boxes over the 'remove' and letting go, I was trying to flip them out of the top of the screen.
While I'm here, and before the forums close down, could you help me with another problem please? When I first downloaded the Opera 19, there was no animation, which I was relieved about, as I hate all those smilies on posts on forums dancing about, but all of a sudden they started to! It's so annoying as I like using that Opera on forums as it's fast.
Is there anything I can do to stop it? There's no settings for it, infact the settings are even more sparce than the Opera mini. There isn't even an option to change the font size.
When I had the old Opera classic I used to go to 'opera:config' but it doesn't exist anymore. I went to 'opera:flags' but didn't understand it.
Thanks