Dear All My mom has a 3rd gen Macbook Air (2.13GHz, 2GB of RAM). Obviously no chance to upgrade RAM. We upgraded her to Lion when that came out and it is admittedly very slow compared to Snow Leopard. I saw a lot of discussion about ML being more snappy than L (on systems with 4-8-16GB of RAM). There is a lot of talk about ML not working well with 2GB of RAM (but neither does Lion). Lots of advice points to RAM upgrade (not possible). So in my specific situation, what would you recommend? I obviously cannot upgrade RAM. (New computer purchase might need to wait up to another 6 months.) Lion is already sucking with the 2GB of RAM. Will mountain Lion suck more or less (or the same amount in which case I'll probably just upgrade anyway)? Any thoughts?