Pages won’t load on IE

I discovered over the holidays several of my WP 1.5.2 blogs won’t display in IE. I use my Firefox and Safari on Mac and FF on my PC so I don’t know how long the problem has been going on. The page loads normally in other browsers, but IE displays a “download file” dialog box. One of the affected sites is here and another is here. But this blog works in IE. They are all hosted out of the same 1and1 account.

I was already at MeFi when I noticed this so I AskedMeFi and got the following response.

Nics-PowerBook:~ % telnet http://www.spartacusroosevelt.com 80
Trying 82.165.193.250…
Connected to http://www.spartacusroosevelt.com.
Escape character is ‘^]’.
GET / HTTP/1.0
Host: http://www.spartacusroosevelt.com

HTTP/1.1 200 OK
Date: Wed, 04 Jan 2006 03:42:48 GMT
Server: Apache/1.3.33 (Unix)
X-Pingback: http://www.spartacusroosevelt.com/wordpress/xmlrpc2.php
X-Powered-By: PHP/4.4.1
Connection: close
Content-Type: ; charset=utf-8

Then it returns your home page, which looks fine. The problem is that last response header, which should have “text/html” between the colon and semicolon. Something’s wrong in your Apache or PHP setup.

XMLRPC stopped working with 1and1 a few weeks ago so I followed some instructions and renamed it xmlrpc2 and changed the value pointing to the file. I see that file name in the above, so is that my issue (I hope not, I use Ecto a lot) or is there anything else you can point me in the direction of that should be causing this

Thanks, I plan on upgrading in a few weeks anyway, but a quick fix would be appreciated.

Thanx
MC/SR