Hi moonyloopy,
As stated above you may have a hack causing this problem. Do you have the Sims2 Pack Clean Installer? If not get it
here . Run this and and select your download folder. It will list all your downloads including any global hacks that you have in your game. These will be highlighted in red. (Not pink, pink are duplicare files) Move these files to your desk top by right clicking on them and select
move then choose desktop. Once these are out of your game, load your game and see if the problem persists. If your sinks are working properly then you will know it was one of those hacks. Put them back one at a time and load your game each time until you find the culprit. If this doesn't solve your problem let us know and someone may think of something else to try. Good luck! :happy8: