Yeah, I was a little surprised by the email, very impersonal (which is unusual from TCH) and very vague. "several older versions of the various blog software" and "all accounts using blogging software" and "make these upgrades immediately to avoid suspension of services. " Now I'm worried. I have MT3.14, but TCH staff have patched it so I'm good to go, right? Or am I still required to upgrade to 3.15?