Update: As of 6.30am PT, Apple had updated its status page as showing all services back to normal. The company said that 40% of users had been affected.

Apple’s system status page is showing a substantial issue with iCloud services, the problems affecting eleven different services and persisting for four hours and counting at the time of writing.

While Apple lists the services as “may be slow for some users,” many users are reporting that the services are either completely unavailable or time-out when attempting to login … 

Services listed by Apple as being affected are Back to My Mac, Documents in the Cloud, Find my iPhone, iCloud sign-in, iCloud Backup, iCloud Drive, iCloud Keychain, iMovie Theatre, iWork for Cloud beta and Photos.

Twitter users are describing the issue somewhat differently.

Multiple iCloud Services – Some users are affected

Users may experience slower than normal response when using most iCloud services.

[tweet https://twitter.com/yannzitouni/status/601330314271678464 align=’center’]

[tweet https://twitter.com/acybot/status/601330181408690177 align=’center’]

iCloud was also hit with a bug last week, Find My iPhone showing devices belonging to other people. The App Store and iTunes Stores were affected by an outage last month, with Apple’s login services failing in March.