The December Cumulative Update for Internet Explorer has been released
Microsoft have released the December Cumulative Update for Internet Explorer:
http://www.microsoft.com/technet/security/bulletin/ms05-054.mspx
It is important that you read the information about 'known issues' (aka problems) that may occur after you install the update:
http://support.microsoft.com/kb/905915
One issue that I would like to highlight is the ActiveX changes. This has been seen to cause some seemingly unrelated effects such as the error message "Object doesn't support this property or method" when trying to open Add/Remove Programs via Control Panel, or the folder setting "Web View" not working properly. The fix for these two issues is simple (see http://support.microsoft.com/kb/909889/)
The update is available via Windows Update and Microsoft Update (Microsoft Update is the new all-in-one update service that covers updates for Windows, but also for the Office Suite).
Note: This update also sets a kill bit for the Sony First4Internet 'rootkit' that has received so much press. The uninstallation activex that Sony released to remove their 'rootkit' carries its own security risk - a risk serious enough that Microsoft released a patch that will stop the activex control from running.
More information about the Sony Uninstaller vulnerability can be found here:
http://secunia.com/advisories/17610