two part question. First ever since I rooted to BB v0.4 I have experienced the following. When I download an app form the market the icon shows up on my app drawer and I can run the app on the original install. Any time after that however when I select the app icon from the app drawer it says "this app is not installed on your phone" Second how do you know if you "need" to wipe when flashing a new rom? Is there a rule of thumb - like if you go from one let's say BB to Chevy? Just trying to avoid learning the hard way.