[Kevin, there is some concern that Vista breaks against MIT 1.4.3 KDC with the umich patches applied. The breakage seems to be related to des-cbc-md5. Do your patches still touch the des-cbc-md5 handling?] Hi. I cannot reproduce this behavior with a stock 1.4.4 KDC. There seems to be no KDC-side changes between 1.4.3 and 1.4.4. In addition, code inspection suggests that what you are seeing cannot happen. Can I get you to confirm that you see this behavior against a stock MIT KDC with no patches applied?