Thanks. I appreciate it.
It works okay w/ Safari. I don’t like the other ‘brand x’ browsers (I don’t find it particularly easy to edit w/ Safari). I’m thinking it might be a plug-in.
There are other complaints on both the Apple and Firefox fora but nothing definitive.
I do find if I don’t ever close the WP site there are no problems.
Everything worked fine w/ Mountain Lion, problems only started w/ the update.