Apple has arranged a period of "scheduled maintenance" to .Mac today, generating speculation that the service may receive a long overdue upgrade.

A message on the .Mac website warns users: "Due to scheduled maintenance, .Mac members might be intermittently unable to access some .Mac services from 10am to 12pm PDT on 08/07/2007. We apologize for any inconvenience."

The maintenance coincides with Apple's special Cupertino HQ media event today, at which the company is widely expected to introduce a new breed of iMac. This also begins at 10am (PDT, 6pm UK time).

Despite being integrated into Mac OS X, Apple's .Mac service gets perpetually slammed for being poor in features, offering a low amount of online storage, appearing somewhat antiquated as a web service, and for being over-expensive for what it is.

Apple CEO Steve Jobs more or less admitted this when the Wall Street Journal's Walt Mossberg confronted him on the matter.

"I couldn't agree more," Jobs said, adding, "We'll make up for lost time in the near future."