A mystery from the East ... East Sussex, anyway.
Running the Atahualpa 3.5.1 theme, no new plugins recently to speak of but out of the blue - while my 'Left sidebar' widget area remains expandable, editable and normal, the rest (from 'Right sidebar' on down) now ignore my every click. I am currently working in 'Accessibility' mode, and of course you can get used to anything, but if I can get the old way back I'll be happier.
All help genuinely appreciated - has this happened to others amongst you?
Andrew | http://www.englishchess.org.uk

Try disabling all plugins to see if one is causing a conflict?
P.s. you should think of upgrading to version 3.7.3

OK, I'll schedule some down time. It is odd that no new plugins have been added tho, it's just seemingly happened. I am indeed thinking of upgrading, but a current 'quick test' reveals that the right sidebar vanishes completely in the new version
Once I've tested yea or nay, I'll come back to you, thanks for answering

If you download the theme from hereYou can upload this to your themes folder with no conflict. You'll now have a folder called atahualpa373 in your themes folder. You can now switch back and forth between the 2 versions of atahualpa.

Yes indeed - this I have already done. That's how I performed the 'quick test - right sidebar amputation' test
More soon ...

OK, Phase One complete - I reset my plugins folder via FTP, reactivated the lot and ... no change ...
If nothing else I've had a good clear out of my plugins folder. So, on the Phases 2 & 3 - default theme test, then all plugins deactivated.
I will be in touch ...

OK, Phase Two complete - I changed to the default theme, but this did not fix the unresponsive 'Right sidebar' widget, which rather lets Atahualpa off the hook ...
Phase 3 here we come ...