Hi guys!! I got a Macbook A1181, or 5,2, it's the 2.0GHz version. Now it's running Leopard, but by now, on Leopard, Skype don't work anymore. It's supposed to upgrade to Snow Leopard, or Lion (buying them) or maybe to Mavericks which instead is "free", am I right?? Is there any way to upgrade directly to Mavericks (for free), just downloading ISO of Mavericks and put it on A1181 with a Clear Installation ?? (not just an upgrade) Is Mavericks compatible with that model?? Thanks in advance.