I am starting to wonder if resetting the device clears the possibility of having an SOD as I seem to have had 1 SOD every charge since Thursday and none after a reset - if this is correct then doing a reset after a charge might clear the possibility of having a random SOD on that charge. I am going to test this theory of the course of this week and report back.
This is all well and good but no one else seems to have experienced this problem on the Kaiser so far.
It does sound as though your phone may be faulty.
The Kaiser out numbers the Toshiba G900 by many more units sold I would imagine in the first week of release for each of them, yet on the G900 the wide spread problems of standy of deaths was very quickly picked up on due to many many people reporting this problem, including myself.
Unless it proves to be a wide spread fault (seems unlikely) then you must consider that your phone is faulty and you shouldn't have to be second guessing what triggers or stops it. Do yourself a favour and get it changed is my advice