This suggests that the cache is believed to be invalid because the cache
timestamp doesn't match the directory create-time. Thought to be due to
incorrect correction for daylight-saving time. My cache was created on
21 March 2008, just over a week before the UK moved into daylight
saving time, and works fine. Perhaps those of you with delays could
check if the creation date is within or without periods of daylight saving.
And if it is within a daylight saving period try deleting the cache so it,
is rebuild from scratch now, as presumably all daylight saving periods
have finished.
The referenced bug also says Changing "FcStat to normal stat" fixed
the problem, but I don't know what this means.
Trevor