well aft a week upgrading to JB, i feel the phone nt as lag as a week b4, might jz like wat others said it takes time to get smooth. bt 1 thing stil occur is tat the graphic transition is nt smooth n hving stuttering when opening apps sumtimes (just sumtimes), especially in settings menu.

abt the battery drain, i found out the culprit was google maps n clock, keep awake

hi bestofel, im also experiencing battery drain frm wakelocks.

in ics my s3 totaly in deep slp mode like urs and it only drop 2-3% for 12 hr overnite. bt aft JB update, within 1hr my battery drain 2-3%. i nvr try betterbatterystats bt by looking at battery page in settings, i found google maps n clock r the main culprits tat keep awake. force close them bt maps will restart itself aft a reboot n clock will instantly restart evytime i force close it. i nvr did any changes to my s3 thou aft jb update, bt the wakelocks doesnt occur in ics while happen in jb

not sure wat more apps having the wakelocks tat keep the battery drain