I'm using the Donncha plugin for SiteWide Feed. As you know, the plugin creates a separate blog that will be filled from other blogs contents.
I've a problem: the Global Tags settings are embedded in the Site Admin Options page, and so every time i modify my Option page and update, the system will create a new Tags blog.
I'm not 100% sure, but when a new tags blog is created, it seems that the "old" tags blog stops to take contents from blogs, and deleting the new one does not resolve the problem.
This could completely harm my blog network, because i use the donncha plugin to create a global feed from my blogs, and then i show it on my external homepage. If i click "update options" i could break all the global feed system, loosing all my contents.