Mark Bahnisch of Larvatus Prodeo writes:
Hi folks
We’ve had major problems over the last few days with a spam attack of
unprecedented size, which has rendered LP almost unusable due to
constant database errors. We’ll be upgrading and moving to a new host
over the weekend (at which point we’ll disappear altogether for a few
days).
Basically, the increased traffic we’ve had since the election began
(up by about a third on normal) has made us a more attractive target
to spammers.
In the meantime, we’ve found turning comments off keeps the site
working as the spammers posting comments is the cause of too many
database connections open at once – hence the outages. We’ve picked
the new host for greater reliability as well as more bandwidth.
In the meantime, we’ve set up a backup blog – LP in Exile – where
we’ll be crossposting and where comments can be posted:
http://larvatusprodeo.wordpress.com/
We’re also appealing for donations to assist with costs involved in the move:
John Quiggin 
that’ll teach’em to make fun of my incisive and witty supplements to their intellectually challenged children’s diary.