I would like to retire this issue once and for all. The screen brightness overall in 2.1 is better than in 1.6 there I said it, marginally better in brightness and way better in colour. What I did was this, both my wife and I have X10, mine on 2.1 Nordic and hers still on 1.6. I went to Android Market screen (lots of whites) and compared them side by side. It was no contest 2.1 was a tad brighter and the whites were way whiter, in fact the whites in 1.6 looked like antique yellow in comparison. Both phones were set at their respective 100%. The wife and kids all agreed that my 2.1 screen colour and brightness was better. At work the next day I compared my 2.1 to two different friends 1.6 and asked about a dozen peoples opinions. They all said the 2.1 phone looked way better. I will concede that the lack of an auto feature sucks for some although mine has been set at 100% since day 1, battery be damned! So on a final note: Unless you can repeat what I have done and get different results can we please consider the subject closed. Thank You.