Unrestricted critical resource lock in Terminal Services for Windows 2000 before SP4 and Windows XP allows remote authenticated users to cause a denial of service (reboot) by obtaining a read lock on msgina.dll, which prevents msgina.dll from being loaded.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11816
https://exchange.xforce.ibmcloud.com/vulnerabilities/11141
http://www.securitytracker.com/id?1005986
http://www.securityfocus.com/bid/6672
http://www.securityfocus.com/archive/1/308164
http://www.securityfocus.com/archive/1/308059
http://support.microsoft.com/kb/815225/en-us