I am using Phil Sturgeon's cache library -- http://getsparks.org/packages/cache/show.
This works nicely - the only thing is that now I notice that each time a cached page is loaded, I get this message in my log:
The session cookie data did not match what was expected. This could be a possible hacking attempt.
My sessions are stored in the database.
Does anyone have any pointer on what I should look into to solve this problem?