I think it’s Firefox. I’m having the same problem with WP, Mistylook, and Youtube. If you change the user agent on Firefox the videos play fine. I’ve decided it’s a bug I’ll just have to live with.
Fireftp – change permissions.
Edit site
Fireftp – revert permissions to 755
That is probably still going to be less of a pain than ftping a file, making a change, ftping the file again, etc etc.
Looking at my server logs – it looks like it was somebody logged into the same server. No evidence that it happened thru the WP admin interface, which is a good thing. It’s user error in this case 🙂 However, I do think that suggestion of chmod 666 on the template editor is dangerous, although anybody that knows how to change uxix file permissions should know better than to leave web pages as 666.
Thanks. I ended up using a hack to display only one category on the front page. The reverse approach more or less, but it works.