I had applied some patches to my Microsoft Office on my company computer, when I starting having some very strange problems with the email templates I use frequently. After some fiddling with my system settings, I started searching the Web for answers. I found others who'd had the same problem, but no solution. So I decided to attempt something that seemed quite futile: contact Microsoft support.
This was my initial support request to Microsoft, sent from their Website:
After applying the latest set of Office updates, Outlook exhibits a new behavior in that when creating an email from a template (.oft) my signature is inserted into the file.
If the format of the template is Rich Text, the signature gets properly inserted at the end of the message. However, if the message is HTML format, the signature is inserted at the beginning of the message.