Running P7 sr 2.1, defragged less than a week ago. no viruses shown up.

Sometimes while rendering it will complete the picture, the progress bar will be at the end, and then poser is "not responding" ( in task manager ) so i have to kill the process.

Other times it will go "not responding" when conforming items or trying to save a pose to the library.

this has been using V4, v4.1/v4.2 , though im not sure if that even matters.

I don't know if its all the same problem or different problems, but any help or suggestions would be great.