Hey there everyone! I would like to get your opinion, especially for programmers in this case, should I downgrade from ML to SL if I will be doing mainly programming work? Note that I have a base line 2011, 11" MBA (I upgraded the SSD to 120 GB from a third party company: OWC). I noticed from my iStat Menu monitor that my memory during normal usage is pretty much sucked-up completely: pretty much of what is left is around 20 MB, fluctuating over time. But the computer runs fine with ML. I actually bought my Mac with Lion, so I got started being used to the Mission Control, etc., but I wouldn't mine going back. The only thing that makes me worried is compatibility issues. For instance, thunderbolt hard drives might pose a problem. What do you guys think? Especially for programmers, and for those people who have simply downgraded from ML to SL. Cheers!