My G1 was in GREAT NEED of a factory reset but I am traveling and can not do it now. Lag Lag Lag will drive you crazy. Up to 20 seconds for my icons to show after I use almost any program. We all know its the Dalvin Cache that needs to be cleaned. I uninstalled program after program but still the lag and only 9% left in Mem. I tried to find the instructions to clean it but could not find any that works on a G1. I am rooted but could not even find the Dalvin cache. Finally I saw this new program called DroidTweaker for rooted phones. With androot root it is easy to root and you can go back to unrooted after you clean the cache. My G1 went from 9% mem to 27% free mem in one click (and a reboot) ! Does not say it was tested for the G1 but I took the chance and it worked. It can also increase the space for the Dalvin cache. Can anyone tell me what I should increase it to?