[nickelocene]

Touch freezes up overnight is a well known issue. I had it the second day after I purchased it. After checking different forums, I found the solution, at least for my Touch.
1. Do a hard rest (hold down both green and red button and push the hole at the bottom) if you haven't done so. Make sure to backup all your data as it will wipe everything out.
2. uncheck the Today Time Out option in Today setup.
3. Turn off bluetooth before go to bed.

Those three things solved the problem for me. But after I updated to the new ROM with WM6.1, I don't have to turn off the bluetooth anymore. But I still unchecked the today time out option.