Hi I have multiple installations of wordpress 2.9.2 on one server. We have multiple bloggers blogging for each blog. I've been using W3 Total Cache without any problems for the past 6 months using the disk cache. Recently the server was a bit slow so we added APC and memcache to the server for better performance.
However once we did this the bloggers noted that sometimes the wrong name appears as the author of a post. The problem happens a few times during the day and the bloggers have sent me screenshots of the problem. I noticed that the incorrect author name is from another blog.
Our old configuration that didn't give us problems:
Page Cache : disk (enhanced)
Minify : none
Database : none
Object Cache : disk
Our current configuration that is fast but gives us incorrect author names on posts:
Page Cache : apc
Minify : apc
Database : memcached
Object Cache : none
Please help me figure out how to solve this. Thanks!