After having used ICS for 2 days, I can no longer stand it and am reverting back to GB 2.3.6. Below is a list of things that made me wanted to do this: Keyboard crashes very often especially when SWYPE was input method Homescreen lag and general app lag Random crashing of app and phone itself Random screen corrputions (like a broken TV/Monitor) General degrading of performance Face unlock does not work 85% of the time I feel for the first time let down by Samsung, I mean what have they been doing all this time to release such a crap firmware? This bearing in mind that I did a factory reset after the update to start from scratch, from clean slate so to speak and still I had all these problems. I feel Samsung did a very poor job of quality checking for this release, and it simply is not fit for purpose. I did not want to use my phone any more and just NEEDED to revert back to GB, my phone was running the risk of becoming a very expensive paper weigh. I reverted back to 2.3.6 using ODIN, which by the way is a GOD SENT! Having had a search around, I can see that this view is pretty common and if Samsung don't get their act together, they are going to pee a lot of people off. Come on Samsung, PULL YOUR FINGER OUT!