[Plugin: W3 Total Cache and WordPress MU Domain Mapping]

I have a wp network setup using the domain mapping plugin so that my site at http://x.domain1.com can also be seen at http://domain2.com. That works fine.

In installed W3 Total Cache and it works great for site speed but the cache clearing doesn’t seem to work for the second domain.

For example, I can edit a post, clear the cache, and viewing it at http://x.domain1.com/post/1 will show the updates. Viewing it at http://domain2.com/post/1 doesn’t show the update and that cache never seems to get updated even on the timed schedule.

I have to log in as admin on domain2 and clear the cache there for that post to get changes.

Is this expected behavior? Is there something I can be doing differently to get cache updates across the board?