This morning I got an email from http://doug.burns.tripod.com/oracle/ - (brokern link) Doug Burns and then soon after from
Marcel-Jan Krijgsman to let me know that my site had been hacked. In fact in the end the hacker had overwritten the index files for my blogs main entry page and also for the archives page. He (she/they) had also overwritten the same files for my
web development blog.
This has meant that the whole site has been down all day whilst the ISP http://www.uklinux.net - (broken link) Uklinux fixed the issue. It turns out that the hackers had also done the same to many other sites hosted by by ISP when they had compromised the server.
Anyway my site is back.