The outrageous feature of Windows XP automatically rebooting after some important Microsoft Updates continues with Windows 7.
It happened early this morning, July 30 2009, after the installation of the “Cumulative Security Update for Internet Explorer 8 for Windows 7 Release Candidate (KB972260). As one paragraph says:
Security issues have been identified that could allow an attacker to compromise a computer running Microsoft Internet Explorer and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer. [Bob: Underline added]
A 2 ½ hour calculation solving a 1,500,000 × 1,500,00 linear matrix was interrupted. Luckily this was not a 60 hour calculation (220 digit factorisations often take this long on the matrix inversion step).