last weekend we rise the level of a domain, frowm Windows 2003 mixed to native, It was ok, but after rebootint the Sharepoint-SQL environment it does not work, it is having validation errors. Later we found that all the 4 Sharepoint-SQL servers have the same Machine Guid. As I understand, it could not be caused because the rise level... is there any chance that it could be caused because the rise level? Why these machine have the same Gui? (The application worked fine before the rise level and Sharepoint-SQL machines reboot).