GTWY, I have a strong sense of déja vu here, see http://support.microsoft.com/kb/977165 and http://msmvps.com/blogs/alvinchen/archive/2010/02/22/bsod-is-because-rootkit-not-ms10-015-hotfix.aspx
The KB977165 article suggests using the tool described in http://support.microsoft.com/kb/980966 to determine whether the kernel update can safely be installed.