I have an unbranded Ace (XEU csc) and recently upgraded to Gingerbread through KIES. I then had a number of issues, I suffered from sleep of death (I presume) where when the screen timed out, pressing any keys didn't bring the display back and I had to pull battery to get phone to work. I also had the problem sending texts when packet data was turned on. As my phone seemed laggy I did a quadrant test and got 586 which was pretty low After searching for ways to officially go back to Froyo, I decided to flash using ODIN and KA9 firmware from samfirmware. My quadrant score is now 616, no sleep of death, no problem texting. Has anyone else had a bad experience with Gingerbread or am I just unlucky?