Aha, answered my own question. :-) Trust Google to have the solution. IE parses the first part of an MHTML document as HTTP-style headers, so if you have an HTM

Aha, answered my own question. :-) Trust Google to have the solution. IE parses the first part of an MHTML document as HTTP-style headers, so if you have an HTML comment at the start of your pages with "Content-Type: Something crazy" followed by a blank line, that fixes it. Google Reader has this (just after the doctype): <!-- Content-type: Preventing XSRF in IE. --> Do a view source on http://www.google.com/reader/m/view/ http://www.google.com/reader/m/view/ and try it (you have to be logged in). I found this out at these links: http://sla.ckers.org/forum/read.php?4,1975,2037 http://sla.ckers.org/forum/read.php?4,1975,2037 http://sla.ckers.org/forum/read.php?4,9628,10259 http://sla.ckers.org/forum/read.php?4,9628,10259