So James and I decided to take the plunge and install the intrepid update on a newly installed machine we had here (it had had xubuntu-hardy installed only a week earlier).
This machine was using the nvidia binary package, but other than that did not have anything that was from a restricted repo.
Upon the upgrade we found that the nvidia package no longer works. In fact, it no longer compiles the kernel module (even though it claims that the package is installed correctly). This left us without an X11 server. Even when trying to use the nv driver we could not get it to work.
On a side note: We found that the nv driver is now no-longer installed by default.
After about an hour of trying to get things to work, we decided that we will just have to live with the vesa driver. Although this makes the system slow, at least we can use X11.
Another thing I noticed, is that it now spams me with an annoying motd, I mean sure system stats on login is may be nice for some people, but I already have most of that coded in my scripts. The easiest way to get rid of this is to remove the package landscape-client with the following command:
sudo aptitude purge landscape-client