I've got a mid 2009 C2 Duo w/2 GB RAM. Stock specs. I'm running Lion now, and I must say it's nice, though slower than SL was, at least for me. When I moved to Lion I had some issues with speed, battery life, corrupted data, etc...Eventually had to wipe and do a clean install. I'm wondering if ML will improve my experience without upgrading RAM, or should I go ahead and slip some more in? 4 maybe? Clean install, or straight upgrade? Any feedback would be much appreciated. Thanks!