[bici-boci]

I reinstalled JD2, the links work.
Cleared the cfg folder, copied the old cfg folder, didn't work.
Cleared the cfg folder, manually reset all my settings from the old, except look and feel captchascalefactor, links work again.
re-set captchascalefactor to 200 - my usual value, again didn't work.
re-set captchascalefactor to 100, again work.

So I think the JD2 misinterprets the position, when captchascalefactor isn't 100.
I normally use 200%, the captcha window is bigger.