i was using the N12 Umay in my N900 and the stability was not so good... An old memory card can do performance and stability issues? i was using a class 4 MicroSD card from kingston.
i think too that Nitdroid was not realiable enough to be used.

I would like to find the version that offers the better stability and if i could use the Nitdroid for more than five minutes without an error, i will install again this system.