Thanks
The website is http://compton.parish.hants.gov.uk
wfcache now contains a lot of files which seem to have been generated from 404s.
When I open one of the cache files I end up at a page like this
http://compton.parish.hants.gov.uk/?s=cat+ids~95%2C98%2C97%2C96%2C94&search_404=1
Up till recently I had been using the All-In-1-events calendar (ai1ec) plugin to imbed events from several public google calendars.
But I recently removed it from my system because it had never handled repeating gcal events completely correctly, it affected page load times, and updates had caused problems.
I suspect, but I don't know, that various search engines may have been trying to update ai1ec pages which they had once cached and which were no longer available.
I cleared the cache nearly 12 hours ago.
Since then, about 141MB of cached pages have been added under the wfcache directory compton.parish.hants.gov.uk_diary
So I've added /diary/ as a cache exclusion, which seems to have cleared the cache.
I'll watch to see what happens to the cache now.
