I've got 6 computers all running 12.04 and they all run very smoothly. 
I have had a few bumps along the way that were mostly cause by package 
dependency issues which I have found to be quite normal for an 
unreleased system.  There are just too many packages being upgrades too 
often during the development cycle to not break a few things every once 
in a while.

I should note that the 12.04 version that I as running is Kubuntu 
though, and unlike gnome/unity, KDE4 is several years into it's 
development cycle while gnome3/unity are towards the beginning of 
theirs, so you should expect them to be a lot more unstable in a 
distribution that isn't released yet.

Brian Cluff

On 03/01/2012 08:53 AM, Michael Butash wrote:
> Just curious, has anyone had a *good* experience upgrading to 12.04
> ubuntu yet? Has anyone had a *good* upgrade on ubuntu in somewhat recent
> memory?
>
> I'd upgraded to 12.04 a few weeks ago now, and have literally seen it go
> from "ok with relics of brokenness" to "almost unusable" within a few
> weeks and little fathomable explanation. The distro built thunderbird
> crashes constantly (replaced with mozilla build for stability),
> compiz/unity half-assed worked for a while, out of nowhere I can't even
> get unity to launch (which is almost a plus in itself). Neither Gnome3
> or Cinnamon work in it, Banshee/Rhythembox both are fairly unstable, AWN
> task manager won't work with most applets (including the default task
> manager), cairo is quirky as all getout, and there STILL ISN'T A REAL
> SCREENSAVER BY DEFAULT!. I'm still irked libreoffice is forced upon me
> and cant render M$ office xml files by default (that anyone but a linux
> user has by default now), and it isn't getting any easier to install
> openoffice to replace it. Most annoying is luks no longer accepts input
> from my logitech wireless keyboard, forcing me upon reboot (which is
> every other day since upgrade) to have to jack in a wired keyboard and
> keep it at my desk for when ubuntu poops itself.
>
> I'm at something of a crossroads with ubuntu, and just wondering if I'm
> alone. Mint is immature, I haven't liked RH-based distro's before, but
> leaning toward them now, and then there's the "just use win7 as a
> windows manager" as I did for most of my windows-based life prior to
> linux. Ubuntu's turned into an abortion for me, consistently eventually
> hozing up a system despite whatever care I give to not agitate it.
> Upgrades have typically been terrible experiences, usually ending up
> installing clean to fix nasty relics of the upgrade, which begs then
> "why bother to make an install?"
>
> Literally crappy windows 95 "upgrades" come to mind, where it'll always
> turn it into some unusable pile upon completion - which is about what
> I'm left with after update-manager -d anymore. It doesn't matter whether
> it's in alpha or final, the results are almost always the same beyond
> 8.04 for me.
>
> Worst is every time something crashes ugly and I try to "send a report"
> it just finds an arbitrary upgrade necessary as an excuse not to bother,
> that would have me restart every 6 hours. I can't even easily try and
> contribute anything to help!
>
> Next time I have to flatten this, I'm going to have to go back to square
> one to find a new distro - I just can't trust ubuntu to work adequately
> for my needs anymore out of box or sustainable over time. Any they want
> to use it in embedded applications?
>
> -mb
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