anybody who takes up an interview is expected to face such 
a question..so be prepared for it.....these are some of the 
possible answer u cud give when faced with such a 
situation...never give a direct answer to this 
question...the answer shud be a positive one in 
disguise....like....

"I am impatient, and I like to get things done and done 
quickly and get frustrated when politics and red tape slow 
down projects
'My weakness was getting frustrated when "leadership" fails 
to make decisions or lead,'
'I get impatient when organizations or groups say they want 
something, don't take the initiative, or make the decision 
to make it happen, pass it off to someone else, and then 
criticize how it's done....try it out....it works...all the 
best to u all