50% of the times when I sign into www.me.com, it says unable to connect to mobileme. Then immediately it connects. This behaviors happens often for new sessions and during existing sessions. Especially when I try to send mail.
I run Mobile Me from the Safari version for Windows on a Vista PC. Send email is painful. Sometimes it refreshes and loses everything you typed. Other times it sits and you are not sure if the mail was sent or not.
The gallery also will say unavailable and refreshes.
The calendar will refresh constantly too.
I am thinking they refresh to make sure they are accepting from the cloud, but when I use it on my Mac Mini, I do not have any issues.
ON a PC though it does not run as fast as I would like or smoothly.