I've been reading around and heard that a lot of other people are sharing my problem with horribly slow internet with 10.5.6. I have decided to reformat my hard drive and update to 10.5.5, but I have a problem. I bought my iMac in 2007, a month before leopard came out, so naturally my mac installation disks do not come with leopard on them. I was able to receive leopard for free since I bought it so close to the release date, but now I don't know how I would go about downloading it again for free. I also have another imac in the house that we bought in 2008. I tried using those installation discs already but they did not work on this computer. Is there anyway I can reformat and still keep leopard? Is there perhaps a way I can get the computer to install using the 2008 imac's disks?