thank you zlakto! you were right!! everything is back to normal...just as i bought it..thank you everyone else...the RnD mode made it look like there was a problem with the device...but now...its ok. Thank you very much. but no thankx to the person who said i should use the factory reset button...you shouldnt say anything if you are not sure of it...you are killing the reason why a forum like this was built! now i should be able to help others that come accross a similar problem.