I updated to 51-3 and couldn't be happier. It's smooth, stable and looks great! I've had my N810 for about 3 weeks and it already feels like a part of me.
I'm still looking for a good, reliable (and simple) way to install AbiWord or similar, but knowing the Linux community, (I'm an ubuntu user) I'm sure it's just around the corner.
Thumbs up!