So, care to say why you decided to switch back to Cacko? Besides ubuntu, have you tried other ROM's??
I decided to switch back to Cacko 'cos I was not able to dual boot with Cacko-Zubuntu.
Main thing is that I had to have something working. I've tried pdaXrom, OE, Hentges (hard to spell!) and others to varying degrees.
In future, I may retry Zubuntu when I have the time.