Just synced for the first time, having downloaded a zip file with a bunch of photos, taken some screenshots, etc. Was expecting a relatively long backup - but no. Whizzed through. There was a pretty long backup when installing 4.2 but not as long as some I've had on the prior firmwares. Haven't tried it with new content in magazine apps yet (the worst culprits for 5-hour backups in the past) - can anyone else running 4.2 GM share their syncing experiences?