Greetings. Bought an A500 about one year ago and it works just fine. Now, I'd like to upgrade to the new Android 4.0, but, to be perfectly honest, I keep running into messages from users who, when trying to upgrade, have hangups, loose control over their sounds, have slow performance afterwards etc. etc. etc. Of course, there are also many users who haven't experienced any problem and who seem to be quite happy with 4.0. All this makes me wonder whether this variation is the result of lapses in ACER quality-control, Google's Android 4.0 builds, the ACER version of it, the distributionprocess or... what? Am I naive to expect a flawless install/upgrade? Is the environment such an important source of this variability? Does this distribution somehow react to whatever Apps you've got installed already? Somehow I get the impression that the upgrade is a matter of "full speed ahead and may God have mercy on our souls!!" and I do not quite like that.