### Clue: Act assuming some won't come because of personal problem? All right (8)
### Answer: OVERBOOK 
 ### Explanation: Definition: Act assuming some won't come
  OVER(because of, as in "they fought over a woman") + BO(abbrev. for "body odour",a personal problem?) + OK(all right). 
Defn. and Answer: What some establishments and companies do – take more reservations than they can accommodate, assuming some won't turn up,come.  And of course all hell breaks loose when more than they assume turn up.