I updated to 1.2 finally and the new Flandry the Great, update of MAME 138.1. Observations from a mega MAMEr:

1. This is the best portable version for any device- no contest
2. Not sure if it is due to 1.2, the new update to 138.1, or a combination of both, but games play smoother. Example is the game, In the Hunt. It now plays smooth with just some frame tweaks and OC to 800mhz. Used to play slow, regardless of tweaks.
3. Some games still lock the device up and require holding the power button to shut down and restart, but I take the good with the bad. In this case, the good is 99% over the bad Seems some larger roms are the main culprit (KOF 2001 is example- it loads, but locks up when picking fighters). Still, a lot less seem to lock up than used to

Flandry, if you ever figure a way to get around the video ram issue, that would fix some game speed issues, but regardless of that, GREAT job!

Funny how the complex Cave shooters play smooth, but older games like Galaga and Galaga 90 play slow- this ties into Flandry's point about some arcade board hardware being an issue to emulate. ALL portable versions of MAME play those games slow for every device I have used, which is a lot.