Try it yourself.
After Microsoft updated the hotmail site, try going to the link above, in any browser other than IE, and I bet you'll have problems logging in. I did.
This is Microsoft, pissing off their user base... I loathe IE now, and only use it when I have to, which is perhaps once or twice a month.
It is not that big of a deal because I use Outlook Express to check my hotmail, but for those without Outlook Express, ur skirooed!
If this is their attempt to "convert" the converted... I feel for them. Linux users are probably the biggest concern here.. if indeed they have a hotmail account.
Oh well there is always yahoo.. or your ISP email account. Or thunderbird/Eudora.