After a bunch of tests (and a colonoscopy - owh), Dad's back - all sorted.
The recent weather would best be described as random. One day it's blowing 30 knots and hot, the next it's dead calm and cold. As you can see from my previous post there was even some fog the other night. Today the temperatures returned to more chilly dimensions (my preference), with similar conditions forecast for the coming days.
The latest Windows 2000 Rollup 1 update destroyed a server the other night, so I've spent most of my weekend trying to restore it. I imagine several more days will be needed before it's all working smoothly again >_<