That is really weird because I am upgrading my wife's phone right now and it breezed through in less than 15 minutes!! It is just restoring her personal data right now....Used DM on a PC btw...
Mine isnt freezing at one point, but it is going very slow....how long should this take?
Its about 130mb download, all depends on your connection, seems that some the connections are timing out corrupting the download, subsequently throwing the fatal error message during install.
Found this link here on CB for the download, install from your Desktop Manager, may need to disconnect from the internet after the install to prevent the DM from automatically searching for the update.