Well, out of curiosity I switched from IE6 to IE7 when I heard the news IE7 is available without Genuine Validation. After installing IE7, the warnings started appeared at the top with security settings and all.
After fixing it up, i stuck up in the default home page. Despite of setting about:blank as default, the IE access runonce2.aspx on microsoft site!
huh! What I did? And what shall I do now?
So overall planning to rollback to IE6 and will stick with it!