You know - I really don't need to update at all.
It's a triple boot - XP, OSx and Ubuntu.
The XP install is fragile right now and hang occasionally. If i reinstall it (as i did once before) , it might screw up the boot manager aspect and let me with XP only. So if that happens and I need to reinstall all three op systems again, I thought i might as well put in the latest ubuntu while I'm at it.
I do not find the triple boot slow -but then It's used mainly for email/net activity mainly in XP.
It's only triple boot as a novelty