I used gingerbreak to root for the first time a few days ago and it did reformat my internal sd. I used it again after updating to 1.8.3 this morning (no ota got it from xda/rds lite'd it) and it formatted my internal sd again. I actually accidentally reformatted it last night also while drinking... I didn't lose much because I still have the previous back up files on my pc. So now I have 4.1.8.3 with root, side loading enabled (never went away in the update), and tibu freezing all the crapware. The network speeds are inconsistent, but still don't seem as fast as when I had the telestra radio flashed.