The new update says it "Fixed WordPress sub-directory issue" -- can you tell me what that's referring to?
I was having an issue, which I described in this support post: http://wordpress.org/support/topic/cant-get-folder-ownership-to-harmonize-with-cache-ftp?replies=1
Basically, the Linux ownership of the sub-folders created by W3TC in the cache folder was different than the parent folder. This caused 500 Internal Server Errors for the cached pages.
Is that the issue this fixes?
Thanks.