[2.7]Page getting downloaded as a .gz file when I hit Home page On IE Only

Hi.
I am using WordPress 2.7
When I hit the homepage of my wordpress blog, the site starts getting downloaded as a .gz file.
I am suing following plugins if that makes a difference

1. Wp-Super-cahce (Disabled compression when I faced the above issue)
2. Wp-Plugin-Cache
3. Google Sitemap

Now only on IE 8 and IE 7 (Compatibility mode of IE8), whenever I hit the index.php page, the browser, isntead of displaying ads, asks me to save a index.gz copy of my home page.

See this link

http://cafe18.in (Its an entertainment and Gossip Blog with Celebrity news and gossip from bollywood)

Open it in IE. 🙁