I'm running WPMU with the DB-splitting code and domain mapping plugins from premium.WPMUDev.org.
I'm running into a problem getting WP Super Cache to work properly. I've been through the entire FAQ on the plugin page, and everything seems to be installed/configured correctly.
However, only blogs with mapped domains are being cached. Non-mapped blogs are showing live pages (not cached).
On domain-mapped blogs, I'm getting super cached pages, but updates are not showing up. By that I mean "new" posts do show up, but if I update an existing post/page, the changes do not show up for anonymous users.
I tried waiting 10 minutes for the garbage collection to happen, but no joy.
Any ideas on what to check from here and whether these two issues may be related?