Evidently, some versions of the Vise Installer don’t quite work properly under Mac OS X…

Here’s why…  The symptom is that your computer slows down or stops responding…  The Installer splash screen may display, but the Vise Installer typically stops at the “Gathering Details” screen.

Why?  You have a “network volume” mounted, it could be an WEBDAV, SMB, or NFS volume…  Even your Time Machine drive may cause this problem.

Quit the Vise Installer, and then eject ALL your ejectable drives & network drives, and try it again.

See Mac OS X 10.3: Slows or Stops Responding While Using VISE Installer for Apple’s tech note on this topic.