I have not found any bugs regarding this update... There are lags like always has been in this phone but overall I feel it snappier. For me, this update had great changes about Music Playback... It fixes the List shown when on shuffle... and arranges songs like a playlist each time I shuffle.... Also the songs are skipped faster and the Media Refreshing time after you unplug it from the computer its at least 5 times faster (used to take it more than 10 minutes to finish reading my 8GB microSD... now it takes less than 2 minutes)