Hi, I've become a happy owner of an old iMac recently (for free) and I am thinking what I could do with it . In other words, I need some advice. This is a white plastic Intel iMac running osx 10.6.8, but running it pretty bad... It has become very unresponsive, some programs do not start or/and hang up the system. So it looks like the clean reinstall of the system is the solution. However, I have only osx 10.5 installation disks with it. As far as I have learned, I need at least 10.6 installed to upgrade to the latest Yosemite. On the other hand, I have not found any tips on if it is possible to upgrade from 10.5 to anything newer. "Newer" I mean still supported, not necessarily Yosemite. Though the box is quite old, it is compact and in a very good condition, so I'd really like to make use of it. So, if anyone has any advice or tips, I'd really appreciate your input. Thank you!