[oats-sig] server work

couple of things...

as you know i've been porting the old server setup over to linux, for  
the oats plone, and most other sites hosted this is done and working  
okay, but the trac and subversion facilities are currently just  
proxying to the old server...  this isn't working properly for  
subversion anyway, so i'm going to try moving it over to the linux  
box now, so expect downtime for svn and trac for next few hours / may  
be a day.

also, apparently the uni buildings folk are likely to be doing stuff  
this weekend which requires our building power to be switched off, so  
the server may not be online this weekend either.... but this hasn't  
been confirmed yet.

andy.