This has happened several times on 2 of my machines. Installing with the install_ script and it continues for 10-15 minutes, having downloaded the tars and starting to compile. Suddenly without any warning the terminal just vanishes. When I bring it back up and restart, installation resumes but vanishes again after a few seconds. Installation completed fine on my 3rd machine -- within minutes of the problem on the other 2. Network connections on my end are okay. One of the logs did say something about "failure to retreive" something just before the terminal vanished. -Thanks.