After 120 hrs and no problems . My HS10 shut down with temp fan light blinking. This was after around 6 hrs constant use. I was in the middle of Die another Day and wanted to see the end so switched power off and on and it worked ok. This was at the weekend and i have had no problems since.The room was quite hot at the time . I was thinking last night that maybe it is time to change or clean the filter. Is it a bit early to do this after 120 hrs ? or should i just put ths shutdown down to the hot room and long use of PJ?