I am currently navigating the 320 and up template for the first time, testing a website shell on ie9 while using developer tools to check compatibility with ie8 & 7 in standards mode.
This site incorporates boilerplate html5 and wordpress. Despite my thorough examination and testing, it seems that everything should function properly across all browsers... but unfortunately, it does not.
You can view the test site here:
If you notice any errors that have escaped my tired eyes, please bring them to my attention. I've been analyzing this for two days now!
UPDATE: To further clarify, when I say it doesn't work, I mean the site remains fixed at the 320 width format and does not scale up in the browser. The best way to test this is by resizing the browser window. In the provided link, everything works well in all browsers except ie7 & 8 in standards mode.