Ubuntu 12.04 LTS - is it ok to use?

don´t use 1.9, move to latest 2.x.

but this is not related to Ubuntu 12.04, its because 1.9 is outdated and not maintained anymore.
 
I use 12.04 lts on several guests, works very well.

Btw, i later reinstalled it using the virtual kernel option and it is lightning fast imo.
Very pleased!