Windows Live Hotmail is great: it’s fast, reliable and doesn’t require me to install any client application but a browser. But there are also things in Hotmail that annoy me.
Marking mail as junk
The Junk filters in Hotmail are very good, as they filter most unsolicited e-mail I receive. However, some e-mail gets delivered to my inbox nevertheless, and when I try to mark it as junk, it just—fails.
See yourself:
Wrong character encoding
Also, Hotmail fails to display some non-English mail correctly, and I don’t know why. Here you see an example, sent from Microsoft Outlook:
The question is: why doesn’t Hotmail display a “Character encoding:” dropdown, as usual?
Fonts in the Rich text editor
Being able to edit the body of my messages in a WYSIWYG editor is great—but why so few fonts? Having few fonts is something I could live with; what I do not like at all though, is that there is no option for “Segoe UI”. Come on, Windows Live Wave 3 introduced Segoe UI as successor of Tahoma, why can’t I use it for my mails as well?
Calendar language
Multi-language support in Windows Live is well implemented. But not in Windows Live Calendar. On opening Hotmail with a browser whose language is set to English, displays Hotmail in English. I open “People”: English. I open “Windows Live Home”: … English.
Then I hit “Calendar”, and what do I see? German. Cool. 
Your problems
You are using Windows Live Hotmail as well, and there is something that annoys you in it?
Let me know.
“The Junk filters in Hotmail are very good, as they filter most unsolicited e-mail I receive.”
Well, you’re lucky =P. In my case, it filters email I do want to receive, and let the have-to-be-blocked ones in my inbox.
Still prefer G-Mail filters =)
I can confirm the Calendar language problem, but in my case, it is RUSSIAN :S
I think On opening Hotmail with a browser whose language is a lot of things.
And set to English displays Hotmail in English is On opening Hotmail with a browser whose language.