1. theme mixup. I can confirm that after the update I had the blue default theme icons mixed with the previously configured nature theme (the seconde theme that came preinstalled). Chossing the default theme and then the other one solved the problem. 2. increased cpu usage. This problem also appared for me. I had the load applet installed which showed regular appearing full CPU usage. The whole interface got really slow while these phases. This problem also was visible in the drasticly decreased battery life of 4h I upgraded to the new upgrade now and then problem seems to have disappeared. 3. touchscreen unresponsive. That is the most annoying problem. Quite often it is not possible to start an application by touching it or even get to the overview of running apps. Touching the respective icons shows them getting activated but then the phone seems to get stuck. E.g. touching the back item in any running app turns the icon active (inverted blue in default theme) and then it stays that way and nothing happens. Using the screen lock switch on the side twice then finishes the action e,g. Also this disables leaving a open dialog window by touching the blurry area. After the problem remained with the newer upgrade from today I now removed the display protector. Since then the touch issue has disappeared, so I'm pretty sure it was unrelated to the upgrade. I reflashed the phone with RX-51_2009SE_1.2009.42-11_PR_COMBINED_MR0_ARM.bin which removed the problems again. Now i just installed the update again and after that problem 1 and 2 seem not to reappear. However, problem 3 just happened again, but it seems not that often as after the first update. I'll use the phone now for a day to see how annoying it gets and then might go back to the original firmware to check that there it again works fine to rule out any hardware defect (to be honest i kind of suspect the display protection to maybe have some influence, but before i scratch it off again I'll wait for maybe some more feedback here)