After a run of almost weekly rate cuts in recent months of 2014, Apple had managed to stabilize their online services. However, this morning (Spanish time) iCloud has returned to give access problems for users, although at this time the problem seems to be solved now.
Between 00:00 and 03:00 (GMT) have been several iCloud services involved, although Apple has not given more details about the fall or the number of users affected. Fortunately, as noted above, these problems have been reduced considerably in recent weeks.