+ 0 Votes With WXP once per year Threv 2 years ago Wheter I needed it or not. I keep my Data on seprate drives and my apps and Serials copied up to a File Server. Now with Win7 I've only had to to restore from the Windows home server image backup (which totally rocks) once and only because I got a zero day virus/Malware that was not indentifiable/cleanable by anything. If you can't identify it and know exactly what it touched then you are NEVER secure. Nuke that shizzle from Orbit it's the only way to be sure.