I am having a laptop that has Windows Vista installed in the same. I had enabled file sharing between other computer that has XP and Vista. When I connect the Vista system with XP the files are synced with each other. In this way I am able to keep my files updated. But there are some files which I do not need. Last time when I check the offline file folder the size was around 20GB. The files size is keep on increasing and when try to delete them I am getting access denied error. Anyhow I deleted them but on reboot all the files were restored back. This is a very weird issue.