Hi Paul and Dave, I've been using my wife's lap-top for the last 18 months (still haven't found the time, or should that be motivation to re-build my desktop PC) and for some reason about 2 months ago, thought of what would be lost if the HDD corrupted - we use Norton 360 as AV/Firewall/Security - so I used its "back up" feature to burn a DVD (some 3GB worth). About a week later the machine froze up (Acer Aspire 5920 with Vista - I can hear the groans....) - I'm sure it was after one of these automated update download and installation sessions - after re-starting it umpteen times, running the Repair option several times, all to no avail. I eventually ended up using the Acer complete Recovery option - about 3 hours later, machine up and running, but everything gone, and I do mean EVERYTHING, letter/document files, photos, Favourites - it freed up about 4.5GB HDD space. I reloaded Norton 360, let machine run all the automated updates, and after a couple of days of smooth operation, stuck in the back up DVD, ran Restore from Norton 360 and got everything back, not in quite the right places to start with, but it was all there, I am now religiously doing a back up DVD clearly dated each month, only a matter of a few pence, may even get a small fireproof safe for belts and braces protection - increasingly all our lives are going on to computer media - has to be worth it just looking after all those photos and irreplaceable memories.