[impudent1]

It's not sprint specific Mike. I too have had this problem since day 1. (verizon) I've troubleshot this problem as much as my noobness will allow. The problem is that I corrupt my own testing by flashing so often.
I have returned 2 phones due to this issue, and am on my third.

Things I have noticed:
1. The keyboard seems to lock the phone up LESS when I slide it open from the today screen.

2. The phone locks up MORE when opening it in the middle of an app, such as SMS or Remote Desktop.

3. Some ROMS seem to act differently - less lock ups, more lock ups. ( I mainly cook with SSK and different builds)

4. The problem is more prevalent when TF3D is running.

5. The first 2 times I walked into the Verizon store to show them the problem, it didn't happen of course.

6. A verizon rep told me a lot of TP's get returned due to this issue.