ms-sites allows editing a site in a different WP network
|Reported by:||wpmuguru||Owned by:|
Related forum thread: http://wordpress.org/support/topic/417895
I was able to consistently reproduce the described behaviour by editing a site that was in another network in a subfolder install.
The attached patch blocks editing a site in another network which we should implement in 3.0.1.
For 3.1 we should revisit the logic used to update the siteurl & home options.