I am considering the purchase of a used Mac Mini (would be my first Mac!). The seller indicated that the Mini came pre-loaded with Tiger, and came with "reboot" disks for Panther as well as a Tiger disk. I am curious what reboot disks are and the significance of having both OSX versions included with the machine even though Tiger was pre-loaded? If I purchased this machine, I would want to do a clean install (just to see how things work and to make sure I start from a clean slate). Based on what I have described, would it be necessary to install Panther and then Tiger, or could I directly do an erase and install using the Tiger media. Are there any other considerations? I believe all other pre-loaded software has media associated with it so I assume these can be re-installed as well (e.g. iLife, Quicken)? Lastly, this Mini is only a couple of months old. Is there anything special I need to do to continue the warranty (may or may not choose Apple Care, but I would at least like to have coverage for the first year). Thanks!