Only if you don't maintain your system. My OS is maintained weekly and exceptionally well to the point of there being no registry clutter or file and folder dis-organisation (see an of the big maintenance threads).
The image creation process takes a while yes but it doesn't leave my PC out of action. I can do everything I'd normally do with no disadvantage while the VHD image is being created.
The image creation process takes a while yes but it doesn't leave my PC out of action. I can do everything I'd normally do with no disadvantage while the VHD image is being created.