why screen become black when starting pgadmin III 1.8.0

[唐荣华 <tony_trh(at)163(dot)com>]

I am from china,I is using the pgadmin 1.8.0.

I find some program as follows:

 

When I double click icon in windows desktop, and starting pgadmin ,At once ,Screen  become black in several seconds,  In addtion when I am connecting  server ,Same thing is occured, why?