Admin for sites upgraded to WordPress v3.4.2 no longer works properly in IE9. On accessing the dashboard there is a warning that the browser is out of date (what!?!) and dragging widgets intermittently fails to work.
What gives? IE9 is the latest version for W7. Ok, so W8 with IE10 has *just* come out, but surely a browser released barely a few weeks ago on a tiny proportion of active machines cannot suddenly make IE9 unsupported!?
Anyone for WordPress care to comment? Amazingly the web seems very quiet on this.
P.S. No "IE is rubbish, use another" replies please!