HOLY GRAIL "CLUE"? The Times has the only follow-up I can find to last week's promised revelation about the inscription on the Shepherd's Monument:

Holy Grail 'clue' at stately home

A CODE etched on a marble monument in the grounds of a Staffordshire stately home is a secret message that the Holy Grail is buried near by, a Canadian codebreaker claimed yesterday.

One or both of the stones thought to make up the Holy Grail are “very likely” to be buried in the Shugborough estate, near Stafford, according to Louis Buff Parry.

[...]

The inscription reads "D.O.U.O.S.V.A.V.V.M." I think it looks like a password to somebody's computer account.