Please describe the problem:
Preference dialogs with lots of checkboxes often mix affirmative and negative
labels.
Ex.:
[ ] Make a backup on saving
[ ] don't show splash screen on startup

This confuses the user and misleads him to accidently choose the wrong check
state if he doesn't read very carefully.

Steps to reproduce:
1. 
2. 
3. 


Actual results:


Expected results:


Does this happen every time?


Other information:
Solution: Guideline for checkboxes "Always use affirmative phrases as checkbox
labels"
(could be that it is already in the hig as a general rule but I think it's worth
repeating since it seems to be a common mistake)