I bought my Thunderbolt on launch day and was never really happy on how mushy the power button was especially after coming from an OG Droid. I would always have to use my finger nail to activate it. After recieving a replacement Thunderbolt for other issues the new phone has a much better power button. In fact its WAY better, it has a clicky feel to it and works just perfectly (hopefully it remains that way). No more percision finger nail presses, I can just use the flat of my finger just fine each time. When I had mentioned to the Verizon rep that the power button on my original Thunderbolt was mushy they said thats a manufactures defect. So maybe if your experiencing the same issue with your Thunderbolt's power button it may be worth your while to get a replacement under manufacturers warrenty. Hope this helps.