Got the i7 Vaio out after a long pause and on starting, it offered me an Nvidia driver update. Since one of the reasons I don't use this laptop is the rather poor colours I thought I'd give it a go. It seemed quite a lot better after the update.
Then I noticed it was going into FF in less than 3 seconds. (prior to that it was only a second faster than the old duo PC at c 6 seconds. Five at best.
Goody, thinks I. But my glee was short lived. Soon it was back to about 5 seconds. In that gap I had changed bookmark files and KeePass data. That's about it. (Bookmarks were substantially less than before.)
It was nice while it lasted.