Apologies...hard drive failure
Sorry about the absence. My hard drive failed and needed a complete reinstall. The important application data I had saved to CD, but I never made a system backup and, after the renovation, I had mislaid my system disks. However, the whole refit was pretty simple -- I had the help of Brian from PC Joe who diagnosed the problem, determined that the disk drive would require a clean-room operation costing $1000s, and instead just put a new system disk together.
(Actually, the reason I haven't posted is that I've just been lazy)