Help: Adsense Link Units not displayed in Internet Explorer

I have added one Google Adsense Link Unit to my blog.

However, while checking out how the ad units appears on different websites, I discovered that the Link Units is simply displayed as text in Internet Explorer. They are not clickable.

The other ad units seem to have no such problem and they are being displayed correctly.

Were any of you facing similar problem with Internet Explorer? Did you manage to solve it? If so, please tell.

Thanks