One of our webservers (number 3) caused an issue a few minutes ago. The others stepped in to take over straight away but you may have had to refresh a page after you saw an error screen.
Its the same server that caused the issue yesterday. It was returned to service yesterday after passing all its tests but clearly there is more going on. It will remain out of circulation for the time being so it doesn't cause any more disruption.
SchemeServe operations remain completely unaffected. Our other servers can easily cope.