I haven't posted on here for years, but I thought I would today seeing as no one has posted their experiences of how 4.0 is on the iPod touch. I have installed it on my 32GB 3rd Generation iPod touch. I upgraded from 3.1.3 or whatever the last one was. Installing the new software wasn't to bad, although it failed on the first attempt, so I had to restore it using the OS 4.0 file. This was minor, but still time consuming. Once installed, iTunes took a considerable amount of time to optimise my photos, again, minor. The OS runs quickly, and Apple have clearly paid attention to detail with factors such as the home screen. When you open up an app from the home screen, the icons move out the way just like they always have, but the background comes forward with the icons and the new glass dock slides down out of view. All the icons have been updated, they look brighter. The animation is fluid and smooth. Refinements have also been made the rotation animation in Safari, which is now very smooth. Back to the home screen, and folders work great. So far I haven't had them deleted by iTunes when syncing. They work as expected, again, with smooth new animations. I don't have very many apps, so I don't have many folders, but they work great for keeping games and stuff in a nice neat folder. The music app has been updated. The layout of has changed slightly, and I don't quite think it looks right. I don't like the full stops after the numbers on the albums, but maybe thats just me being picky. I have found a massive bug in the music app, cover flow seems to have arranged my albums in order of Album Name. Also, some of my albums aren't even in there, but are found when browsing the music app out of cover flow. I don't know if this is a common bug or if its something do with my iPod and whether I should consider restoring it. Wifi is a bit temperamental. It's not very consistent and sometimes the iPod doesn't think it is connected, when actually it is. Some apps I have don't work very well under 4.0. Facebook (when I first used it in 4.0), didn't want to log me in. Eventually it did log me in and it's worked fine ever since. Beejive IM is very buggy now. Sometimes it refuses to connect, other times it will connect but then kick me out and then sometimes it works fine. It's hit and miss, but with a bit of persuasion it usually works. It sometimes helps to close the app completely using the multitask panel. 2Do app is also very temperamental. I've had a couple of times that I've opened it and it's let me in and worked fine, other times it opens and kicks me out straight away. I've tested a couple of game apps, such as NFSU and Super Monkeyball and they all seem to work fine. Random Features I have found: - Airplane Mode is now an option in Settings. - Lyric and Podcast Info is now an on/off option in Music under Settings. Other bugs I have found include: - Random black screens when opening up apps (including the music app and Safari) - YouTube isn't working for me, don't know how to fix this, but I'm not too bothered right now. - iTunes won't back up my iPod when I connect it, not major. - Theres a strange bug in Calendar. When I open the app and tap "Calendar" in the top left corner, I'm taken to a page with a option to "Show All Calendars" then a list of Calendars available. Above the list of Calendars is a title that says "ON_MY_DEVICE_TYPE_IPOD". - Sometimes I get errors in the App Store, not major. So, theres a quick insight into OS 4 for the iPod touch.