OK first, my optimus is currently on Zefie's Scott Pilgrim CM7 ROM, and it runs flawlessly, but whenever I switch to any 2.2 ROM. my phone is slow-ish, and apps give me "Computing..." whenever I go to the Applications Section in the Settings, also when I start the Market, it work fine til I try to install a app, it only gives me a "Downloading..." loading bar that doesn't go anywhere. Wi-fi works, 3G works, basically anything phone-wise works, but Android itself is messed up, I found out that if I go into recovery and fix apk mismatches, it works, until next boot or until I get a bad installation, so it becomes a big pain, please help, I want to switch to 2.2 to get better compatibility with apps, and such...