I have an old Macbook Pro 3GB (http://support.apple.com/kb/SP24) with 10.6.8 on it. Is it a good idea to install 10.7 or should I stay with what I have?
Thanks a lot,
Gery
Mac OS X 10.7 Lion is supported on late 2006 MBPs.
3 GB might not be enough RAM though, depending on your workload, but you could always use an external HDD to backup your current Mac OS X 10.6 Snow Leopard installation via CarbonCopyCloner (version 3.4.7 is still free and available for download here and works with Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion and OS X 10.8 Mountain Lion) or SuperDuper! and then upgrade to Mac OS X 10.7 Lion and in the event of not working out between Mac OS X 10.7 Lion and you, you could always revert back to Mac OS X 10.6 Snow Leopard via booting from the clone and cloning it back.