I have two machines, a laptop running Windows XP Home SP2 and a desktop running Windows XP Pro SP2. When I run CCleaner on my laptop with Google 'internet history' ticked, I lose all my extensions. On the desktop I have the same boxes ticked but when I run CCleaner the extensions stay. Looking thru all the 'geek' talk, I dont really understand 1) why CCleaner has started messing up the extensions and 2) why only on the XP Home machine. Any thoughts??