Patch for mod_limitipconn which allow to limit the number of
simultaneous connection per same virual host or user uid.

New configuration directives:
  MaxConnPerUid - maximum simultaneous connections per user
  MaxConnPerVhost - maximum simultaneous connections per virtual host
  MaxLA1, MaxLA5, MaxLA15 - maximum Load Overage value for the past
  1/5/15minutes.

Patch attached or can be downloaded from
ftp://ftp.opennet.ru/pub/web/modules/limits/