I think that there may be a problem with my set up. I have this mobile theme installed: http://crowdfavorite.com/wordpress/plugins/wordpress-mobile-edition/
I ran some speed tests here: http://www.webpagetest.org/result/101105_ASMN/
and it keeps coming up with the mobile version. I am guessing I need to configure something here: /wp-admin/admin.php?page=w3tc_mobile
but struggling to work it out. Can you possibly point me in the right direction please?
http://wordpress.org/extend/plugins/w3-total-cache/
Are you using the default W3TC settings? Seems there's a bad user agent string in your settings.
Have not changed anything in the user agent settings that I am aware of. Added some pages into minify, and switched on page caching and object. That's about it I think.
If you disable both groups, is there any change in behavior?
Not sure what you mean. But I had a couple of people look at it and it all seems OK on mobiles.
So the default W3TC configuration works ok?