Is the site running OK today?
I get notified of every error that occurs on the site and today since 07:15 BST there have been a very large number of database timeouts reported. Normally I see 1 or 2 a day but at the moment they are occuring at 1-2 a minute. I've reported this to the ISP and I'm awaiting a response. There could be a database lock problem or something.
How is the site for you? Is it working normally, or a bit slower than usual? I've stopped and started it several times in attempt to resolve it so if you saw a yellow banner saying the site was down, that'll be why.