I'm not using Launcher, but I can attest to choppiness on my phone with Froyo itself. I've done a factory reset and I'm still noticing this, so I'm not sure what it up. What's worse, it that my phone is behaving the same way it was before the factory reset and now that I've done the reset, I've lost some really important stuff. For example, I use MYBACKUP Pro to save all my data and apps, but what they don't tell you is that you will lose the stuff inside some of those apps. I have a password keeper and yes, it saved the app, but erased every single thing I put in the app, so all of my accounts and web sites and everything I put in it-gone. Bummer.