Currently Being ModeratedSep 14, 2012 2:46 AM (in response to Dougal222)
With only 2GB and a standard hard drive I'd recommend against Mt Lion. 2GB is the minimum required and that truly is a minimum. Lion would be acceptable but you'd notice that it was a bit slower than your Snow Leopard is now.
In the past I've recommended to several friends and colleagues with the same computer as yours to stay with Snow Leopard unless they had an absolute need to use Lion.