BB Tour 9630 :: Hourglass Of Death / Screen Freeze / Dropped Calls

I've owned my phone for 8 months and I'm having ISSUES. This thing has been babied all over the place, so I want an expert opinion on what others think might be the problem...and if I should get a replacement phone.

I've had trackball issues with the phone since Day 1, but they weren't so miserable that I couldn't live with it, so I kept the phone. The phone has been pretty great: beautiful screen, fast, etc. etc.For the past month, I've had issue with:

1. Signal - Drops ALL THE TIME now

2. Dropped calls - Often

3. Browser "can't render page" messages when trying to surf the web

4. Hourglass of death

5. White screen

6. Screen freeze

7. Delayed delivery of push email

8. Trackball goes left, when I try to push it right, and vice versa (I even cleaned it)

I called Sprint and after much back/forth, they suggested I get the trackball replaced. I reminded them that won't solve all the other problems, so now they'll send me a replacement ("refurbished") phone instead.Does my phone need replacing or is there something else I can do to fix the above problems?And please don't say "hard reset" - not only has it already been done, but what phone requires so many hard resets in less than a year?