foxit reader is a good small and fast loaded pdf reader but it can not beet the adobe reader.
although adobe is slow than foxit but has many features which you not find in foxit.
adobe reader is slow because it has numbers of plug ins which loads with adobe reader each time when we run it. Not all plug ins necessary every time.
we can temporarily desable the unnecessary plug ins when they are not needed at that time.
how to do it?
just download and install "PDF SpeeUp" from here with the help of it desable unnecessary plug ins and see effect- fast adobe reader.
http://3d2f.com/tags/adobe/reader/fast/start