If you wan't this version of ICS to run cleaner and more stable prior to the inevitable "fix" patch for ICS from Acer, avoid task/app killer applications (don't kill anything). Check any "performance improvement" apps you may be using to make sure that app kills are not being issued. What I have also seen happen repeatedly after testing this ICS update for a few days (since 4/27/12), is that the g-sensor stops working, and the log then shows a constant stream of MLUpdatData error (code 26) messages. This then appears to be a of cause system sluggishness, screen flashes, various application problems, system lockups, icon issues (blank/incorrect), etc. An obvious early symptom is the loss of automatic screen orientation, progressing into more severe symptoms as you try to use apps. Power off/on will not clear this. The only reliable way I've seen to clear this g-sensor problem once it starts is the hardware reset (pin hole). After now having studied the Android OS more closely, I don't see any good reason to manually kill apps on the A500 anyway. If apps are acting that badly, the best course appears to be removal, not killing. The OS should be handling this problem better, and the next patch will probably fix this, but if you want to avoid the related problems in the mean time, don't kill any apps. By the way, if you don't kill any apps, ICS on the A500 is very fast and very nice. I'm having fun discovering the cool features.