I have just bought a A500 and getting used to it. Wife was playing with it and turned off notifcations that come up on the bottom right and also effected running apps as it doesnt come up any more. Looked everywhere to turn it on but can't, can anyone help? Also I used File Manager HD which is great for tranfer of music but i have had two file just end up in limbo frozen . Has anybody had this issue and know how to fix it?