I am using Market Theme and have these plugins active:
All in One SEO Pack
Google XML Sitemaps
WordPress.com Stats
WP-Table Reloaded
I guess it's an All in One SEO Pack problem - in the Configuration panel, where I put Home Title, Descriptions and Keywords, any words with apostrophes show in the Source Code with a backslash before them.
Unfortunately the All in One SEO support is useless, unless I pay a subscription. I've searched their forum to no avail.
I've also seen questions like this for previous versions of WP where an update to that version fixed it.
Does anyone know how I can fix this or if there's an update or fix to 3.1?