I just finished updating two computers with the final pre-release patches for FC3-T3 The single process P3 was updated using yum and is running OK. However, I also updated a dual xeon from FC3-Test1 to FC3-Test3 using the iso disks, and then copied all of the rpm files to a cd from the single processor machine and used them to update the dual -xeon which is not connected to the network. The dual xeon update went smoothly until I updated all the xorg X windows files to version 6.8.1-10 After that X refused to run and issued a signal 11 error. I tried both the nvidia driver and the nv driver , but X would not run with either video drivers. Finally I used rpm -ivh --force to re-install the xorg version 6.8.1-8 which was released about a week earlier. After the older version of X was installed , the system started to work again. I am upgrading a third single process system now and will find out if it has the same problem.