hi i'm not a major computer whizz but i do know that if you want to save all settings then turn the computer off properly and just incase i can show you where to see how long the data is being saved for if you want?
i only have xp so can only tell you how to do that but i hope it helps you anyway!
right well first of all go to the control panel which will be there when you press start to look at programmes , then go on network and internet connections , then there will be several options down the bottom choose internet options ,then there will be a few choices at the top which will have general security etc ,well you want the first one the general page and you will see there is a bit that says browsing history click on settings! then down the bottom of the next part you should have history!! this will tell you how many days it is saving for and if you want to change it just put the amount of days you want then press ok! hope this helps although i do think it is that you are just unplugging and not turning off properly .
And don't change anything else if you aren't very computer literate as it can cause problems but just changing the days should be fine. hope i could help, clarexx
And hubbies can be naughty sometimes but i don't mind as long as its safe! as mine let in trojans looking at porn !!!!!