SharedObject doesnt work on different computer

hello, i am developing a game with flash…
the data for this game is saved in sharedobject… in my computer it runs ok, but when i gave it into my friend, first it run ok, but later after i make some changes (the saving code is the same) it cant save anymore, as if the sharedobject can’t be flushed.
but it run fine in my computer. later on i check “global storage setting” for my friend flash player, actually it has allocate 100kb for local.
so does anyone has experienced this problem before? please guide me.
thank u