CWmike writes to mention that the "Windows Presentation Foundation" plugin that Microsoft slipped into Firefox last February apparently left the popular browser open to attack
. This was among the many things recently addressed
in the massive Tuesday patch. "What was particularly galling to users was that once installed, the .NET add-on was virtually impossible to remove from Firefox. The usual 'Disable' and 'Uninstall' buttons in Firefox's add-on list were grayed out on all versions of Windows except Windows 7, leaving most users no alternative other than to root through the Windows registry, a potentially dangerous chore, since a misstep could cripple the PC. Several sites posted complicated directions on how to scrub the .NET add-on from Firefox, including Annoyances.org."