In OS X, I had similar problems. After selecting the .backup file and pressing restore in pgAdmin, I got a spinning beach ball. Everything, however, worked in the background, the user interface just hung.
, , - OS X Windows. "", postgres, , "Bytes Read" . ~ 15G, "Bytes Read" . 15G, , pgAdmin .
(BTW, 15G 1,5 Mac i7 8G )