I'm using ubuntu LTS, 32 bit is working good for me, only google chrome and newest Android SDK is missing.
I will switch to 64 bit when the next LTS is released.
Sorry, just curious - doesn't 14.04 LTS have a 64-bit version? I think I ran it for a while (I don't always stick to LTS though).
Yes of course
My computer from 2009 is limited to 32-bit but it's still working fine so I'm reluctant to throw it away. I guess I'll have to now.