Unfortunately this site and many others were hit when our hosting provider’s servers were badly mangled by an attack, apparently by someone with a grudge against the host.
Most of the sites have now been recovered and business carries on. However it re-emphasises the issues of ‘disaster recovery’ and plain old fashioned ‘backup policies’. When your turn comes it’s never a good time, but if there is a backup available you will be glad you spent the time necessary to create it.