I am running a WP 3.4 multisite/network installation and all works like a charm (approx. 40 sites). I recently (already on earlier WP versions) noticed that WP is not initialized correctly when viewing the main site or using the main site's wp-admin.
The issue is visible in several areas:
- language setting is not honored on the front end
- in wp-admin some plugins have a fatal error when parsing the output of the get_role call
To me this points in the direction that somehow WP is not initialized properly or completely.
Any help is appreciated. I have "fixed" the plugins by checking if get_role returns a proper object, but that is ofcourse not the solution.