I'm having some strange behavior with my W3 Total Cache solution working on my multi-user Wordpress 3 installation. The multi-user is setup to use sub directories, and I'm using all types of caching in W3. My suspicion is that my problem has something to do with the .htaccess file.
Periodically (but not consistently) navigating to certain parts of the site will end up redirecting to the wrong place. For example if I goto /corporate/ which is one of the subsite directories, it will redirect to /directives/corporate-training/ which is a single post of a different sub-site. This only happens occasionally, sometimes it is not a problem (which is why I think it is somehow related to page caching)
The behavior suggests that somewhere in the redirect rules, it occasionally forgets to check for other sub-sites, and instead tries to match /corporate/ to the closest post slug in a different site.
Looking for any guidance on where to look for the problem.