The outage apparently was triggered by a key server in Ireland housing a certificate that expired at midnight on Feb. 28.

FORBES: Ridiculous: Microsoft's Azure Fails Over Unrenewed Security Certificate

When the recipient opens the e-mail, the message retrieves the decryption key from Disappearing's key server and it's displayed in decrypted form.

CNN: Make your e-mail disappear

But after the time limit specified by the sender, the decryption key is erased from Disappearing's key server, making the message unreadable and effectively destroying it, even if the recipient stored it.

CNN: Make your e-mail disappear

The key offerings are in the server management services and system oriented architecture.

FORBES: Why IBM Should Be A $185 Stock

Last month Apple announced it was releasing to developers source code for a few key components of its Mac OS X Server operating system.

CNN: Apple alters open-source licenses after criticism

With that being said, we've convinced ourselves that the future of Media Center, and the key to wider adoption that we think it deserves, is with Windows Home Server.

ENGADGET: Is the future of Windows Media Center with Windows Home Server?

McGuire says a key addition is the built-in client for accessing applications on Windows NT 4.0 Terminal Server Edition, or Win 2000 Server.

CNN: Microsoft reinvigorates handheld PC

Organisations that look after the top level domains such as .uk and .de are asking Icann to give guarantees about root server stability, given that billions of dollars of e-commerce now depend on the safe running of these key servers.

BBC: Net's servers under scrutiny