I am not sure when but I realised that whenever I purchased a specific object time in the sim world froze. I could still build and and return to the neighbourhood, save and quit but the time was fozen and the sims just stood their. After a while I ralized that it was when I purchased a cell/home phone that the game froze. This is highly annoying as when I travel to hotels and community lots it always freezes and I have to quit then restart my game. Does anyone else have this problem?