Microsoft has released security bulletin MS08-055. To view the complete security bulletin, visit one of the following Microsoft Web sites:

• Home users:
  http://www.microsoft.com/protect/computer/updates/bulletins/200809.mspx (http://www.microsoft.com/protect/computer/updates/bulletins/200809.mspx)
  Skip the details: Download the updates for your home computer or laptop from the Microsoft Update Web site now:
  http://update.microsoft.com/microsoftupdate/ (http://update.microsoft.com/microsoftupdate/)
• IT professionals:
  http://www.microsoft.com/technet/security/bulletin/ms08-055.mspx (http://www.microsoft.com/technet/security/bulletin/ms08-055.mspx)

How to obtain help and support for this security update

For home users, no-charge support is available by calling 1-866-PCSAFETY in the United States and Canada or by contacting your local Microsoft subsidiary. For more information about how to contact your local Microsoft subsidiary for support issues with security updates, visit the Microsoft International Support Web site: North American customers can also obtain instant access to unlimited no-charge e-mail support or to unlimited individual chat support by visiting the following Microsoft Web site: For enterprise customers, support for security updates is available through your usual support contacts.

Non-security-related fixes that are included in this security update

This security update fixes the issues that are described in the following articles in the Microsoft Knowledge Base: This security update also fixes the following issue that was not previously documented in a Microsoft Knowledge Base article:

  You have documents in the Microsoft Office Open XML file format that use versioning and extensibility markup. For example, the documents are created in Word 2010 or Word for Mac 2011. When these documents are opened in 2007 Microsoft Office system applications, spaces are missing between some words in the document. After the document is saved, these spaces are removed permanently, even when the document is reopened in a newer version of Word. This update will help prevent Word 2007 from removing spaces when opening documents in this scenario.  

This issue may occur when you work with documents that are created in an application such as Microsoft Office 2008 for Mac.

Update replacement information

This security update replaces the following security update:

File information

The English (United States) version of this security update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.