Patch will be released to address the Windows Animated Cursor Handling
Tomorrow, April 3rd, 2007. Microsoft will release a patch to address the vulnerability in Windows Animated Cursor Handling. The highest Maximum Severity rating for this is Critical. This updates will require a restart.
In the meantime keep your antivirus signature files updated. It can help to protect you against attempts to exploit this vulnerability.
For the latest developments regarding this issue see the MSRC Blog.
When the patch becomes available please install it as soon as it is released.