Ticket #4382 (closed bug: wontfix)
GHC trac doesn't work well behind load balancing NAT.
Behind a load balancing NAT router, it is very difficult to do things with GHC's bug reporting system, because one gets logged out (and back in again) randomly.
The problem is exacerbated by excessive redirections to "you don't have permission to do that" pages on this site, which cause browsers like firefox to occasionally permanently forget things such as the contents of forms.
Some websites have an option to *not* tie sessions to IP addresses, which this one seems to lack.