It looks like the apt-get upgrade fixed things ... I've gone over half an hour with no lockups, doing essentially the same thing I was doing before, which is installing lots of packages. So I guess the install process should be:
1. Install
2. Boot up and kill X
3. Run "apt-get update; apt-get upgrade" as root from a console
4. Reboot to get the new kernel and X.
It looks like the apt-get upgrade fixed things ... I've gone over half an hour with no lockups, doing essentially the same thing I was doing before, which is installing lots of packages. So I guess the install process should be:
1. Install
2. Boot up and kill X
3. Run "apt-get update; apt-get upgrade" as root from a console
4. Reboot to get the new kernel and X.