Hot off the Debian-Security mail list:
“It has been confirmed that the Twente University server rooms have now completely burned down. This means, (security,non-us,nm,qa}.debian.org and ftp.snt.utwente.nl are now lost. Rest in peace…
To translate and summarize http://www.webwereld.nl/nieuws/13242.phtml: “The fire started a little after 8AM CET. There are no casualties. The near Dutch-German internet exchange will take over some of the SURFnet activities. The network will probably be up again tomorrow, with help from HP. A new server room in another building was already being prepared anyway for use next month…”
And yes, also in the Netherlands it’s highly unusual that such a fire happens.