I seem to have stumbled across a way round my problem, although I have no idea why it works. This is for the ipad only, not the laptop on which I am currently typing.

1) Open site, log in, go to "Unidentified" page.
Ipad opens page then freezes.

2) Open site, log in, go to "See all comments" page, then go to "Unidentified" page, everything works fine.

I can cope with things driven by clockwork, like my gramophone, or steam, like the Tornado, but this......

With best regards
jfs