Testing on a Windows 2008 R2 x64 VMWare guest w/ Visual Build Pro v8.0 x64, we built 6 simultaneous instances (3 running VisBuildCmd via scheduled task, 3 running VisBuildPro launched interactively) of the attached project for several hours and could not reproduce any freezing. We would need more details to be able to reproduce the problem here (see
http://www.kinook.com/Forum/showthread.php?t=3044).