The fix essentially deals with changing the RCAMaxConcurrency setting in the default throttling policy value to a higher number. Instructions on how to do this can be found here:
The following is a repost from PC World magazine regarding Apple iCloud that we find interesting. The full article is found at http://www.pcworld.com/article/237086/apple_icloud_what_it_is_and_what_it_costs.html#tk.hp_pop:
With Apple revealing iCloud price details along with the beta version of iCloud.com, now seems like a good time to explain what the service is to anyone who missed Apple’s announcement in June.