Somehow, I can’t imagine there are many users of Microsoft Hotmail who also own iPads. But, with over a million iPads sold so far, a fraction of 1% amounts to thousands of Hotmail users. And, they’ve noticed something funny about using Microsoft Hotmail on an iPad: It doesn’t work very well. Some are reporting problems composing and resplying to email. Although the problem is not fixed, Microsoft’s Hotmail team is aware of the problem and working towards fixing it.
In the meantime, pointing your iPad at Hotmail.com redirects to the mobile friendly site designed for smartphones. Composing and replying to email works on the iPad from this version of the site.