Appologies for the outage yesterday that was my fault. I was trying to get the /boot volume mirrored finally but managed to add /hdc into the mirror rather than /hdc2 thus overwriting the partition table. Oops.
Mirrors were fixed easily enough but i forgot to remove the defunct md0 device from mdadm.conf so it wouldn't boot.
All sorted with thanks to DediPower.
PHP has been upgraded as per: http://security.gentoo.org/glsa/glsa-200504-15.xml
There was a UPS failure at DediPower on Saturday morning which caused the unexpected reboot. All services were restored at about midday.
I've migrated the DNS for newswall.org.uk from earth/venus/pluto.theplanet.net to ns1.newswall.org.uk and the DediPower DNS servers, this should go live shortly.