I don't find a huge lag in Mer.. it isn't much WORSE than maemo IMHO.. depending of course on the software you are trying to run.. but it isn't any better. If you keep the software to lightweight software like Meiz put then Mer/Ubuntu is perfectly fine and functional. I have used the new OpenOffice 3.0 perfectly fine as long as your document isn't littered with tons of embedded images and other stuff.. but even then it'll just take longer for it to load.. once up it works fine.

I haven't used it much after adding this onboard keyboard though so I don't know how that'll effect things being that it's quite CPU hungry. It could very well impact most of the heavier software that works OK like OO.org or FF 3.. the lightweight stuff should still function decently though..

Anyone get a good PDF viewer to work right in Ubuntu/Mer?? I installed xpdf but it won't launch.. crashes before it can. I haven't had a lot of time to look into to find why but just curious if anyone's found one..