I have setup a new dev site using 3.4.2 and am running into some issues when attempting to add custom fields to a page.
When I add a new field it fails to add and then the "Add Custom Field" button disappears. They only way to get the button back is to reload the page (or cancel the new page add and try again).
I have managed (somehow?) to get a few custom fields added, but for the most part it is not working as it used to in 3.4.1.
I have tried this under Chrome and IE 9.
My server is a shared server from Hostgator.
I am using Twenty Eleven theme, latest version.
All plugins have been deactivated.
Thanks for your help.