no safe mode, just regular turning on the computer, all computers are maintained regularly. and none of them have anything in common 3 of them have ie7 others have ie6. it is just strange. if it is a case of this"It happens due to Internet Connection, when Recieved not responding." then what could it be, and how to fix? it is just strange that it only happens for 30 mins at a time and only once or twice a day.