I had to reinstall my sims 3 and the problem show up again. After like 2-3 days of playing the game then my sim family will just stand their and do noting at all. Only is stuck taking a bath (forever i bet) and the other one won't change her outfit. It happen last month too that only the toddler can walk and do stuff but the other 2 won't do nada. How can I fix this?

have you tried 'resetsim SimWhatstheirname' cheat?

it fixes things like these up.

sometimes when u use 'moveobjects on' and put ur sims somewere else, it will move again. I had that sometimes.. very weird :p

@earthgirl - I never try that. I will test it out now cuz I had to remove some of my mods/hacks out to see if it helped
@fur - I never did that moveobject cheat on my game yet. I did that on the first time around and never did that again.

Well I tried it and I have mods and such in my game. Does no harm. Just unblocks the sim, without affecting anything(like relationships, family tree, etc).
I use it quite often when i get errors. ^^

It's possible you have found yourself with another EA bug. Especially when you mention a toddler in the house.
It seems when you have a baby or toddler in the house on a different floor from older sims, once the baby/toddler's
mood drops to the point it needs attention, all older sims will be trying to get to the baby/toddler to take care of
the needs but can't. Unless the baby/toddler is in a crib. Otherwise you will see older sims stand there with the
toddler showing up in their queue and then go away immediately. If this describes your situation, the only thing
you can do is have one of the sims go to the floor the toddler is on and then go to the toddler.

If this is not the case in your situation, you may have a Custom Content issue, in which case you would need to
temporarily remove your custom content and test your game to see if it continues or not. As always, remember
to delete cache files when adding/removing custom content.

Ok I try the reset sims and that don't even work. The clock on the game is also frozen and the sims still don't do anything not even the other family in the hood are the same. I only have awesome mod and the pregnancy hack for 9day preg and still they won't move. Is it the patch or the mods/hack that doing this?

The way to find that out is to take them out temporarily and see if it helps. It's possible that the pregnancy hack is incompatible with the Awesome Mod.