Hey there,
I don't know why you are experiencing freezes and whatnot. I do know that there are some possible causes but we'd need to know more about how you use the tab and maybe the kind of apps you have on it.
Also, are you rooted/running a custom ROM/kernel?
Once we get some info, I will also move this post to the correct forum; for now I'll leave it here.
I'm subscribed to your thread here so I'll get a notification when you post.
jmar