What versions of Windows are affected?
Windows XP, (SP1 and SP2), Windows 2003 are affected by the currently circulating exploits. Other versions may be affected to some extent. Mac OS-X, Unix or BSD is not affected. Note: If you’re still running on Win98/ME, this is a watershed moment: we believe (untested) that your system is vulnerable and there will be no patch from MS. Your mitigation options are very limited. You really need to upgrade.