Microsoft/Danger. Enough Said.

In the canon of Microsoft cock-ups, this may be the most humiliating. A server failure at the company’s Danger subsidiary has wiped out the personal data of a large number of T-Mobile Sidekick users and despite its best efforts Microsoft cannot seem to get it back.
DANGERSIDEKICK

Windows 7 Minimum Requirements

Windows 7 system requirements; a new laptop for a Mac user and moving email contacts to a new Internet service provider.