The svn.perl.org server went kaboom. The kernel killed itself with lots of Out Of Memory errors.
I can't figure out the magic incantation to get into the Lights Out Management on that box (it's an old IBM server) and it appears we set it up to use that rather than the Cyclades console and power management.
Anyway - the datacenter staff has been sent to our cabinet to get it booted, so hopefully it won't be too long before it's back. Worst case it'll be up tomorrow morning (PST) when Robert or I go down there and find out what's going on (sorry, you will have to do without the svn server for 7 hours).