iCloud's email service (@me.com) has been down all day for some users, including myself. Apple acknowledged that the service was having issues at 10 PM PDT, but I had issues at 8 AM PDT today and haven't had any access since. They claim that less than 0.2 percent of users are having issues with the service, yet every time things go down I'm always the one experiencing it. Hopefully things are on the road to getting fixed soon because this often -- every few weeks -- downtime is getting irritating, especially since it's my main email source.
Update 5:20 PM: Still nothing -- I haven't had email in nine hours. What's going on, Apple?
Update 6:24 PM: And everything's back online.