I have had similar experiences with my Pre, but FWIW not consistently. As expected, the more apps left running load times for new apps definitely increase. I tend to keep most apps closed when not actively using the phone and rarely experience more than a one or two second delay. For example, I just took a picture and capture to view was less then 5 seconds. I closed the camera app as a phone call came in and saw the keypad immediately. On the few occasions where the phone has started creeping, I popped out the battery. Once the OS reloaded all was smooth again.