i have been searching like crazy, here and google, to find a potential resolution to this.
on an increasing basis, we are getting "page not found" errors (seemingly random) when using the admin pages. everything from saving a post/page, to deleting a category, etc, can result in this error. sometimes it happens and sometimes it doesn't, so it is difficult to reproduce reliably. in one case when the error seemed consistent, i finally tracked it down to a plugin (YARPP). i upgraded the plugin, and the problem went back to being random.
i know i can disable all plugins and probably figure out if one of them is the culprit, but it will take so long to do that (given the random nature of the error) and meanwhile the website will be disfunctional without plugins.
has anyone seen this particular behavior?
any useful thoughts would be GREATLY appreciated.