Storage location of "Cached Posts Lifespan" ?

[akke]

Where does vbulletin store it's cache files when Cached Posts Lifespan is set to yes? ... I can't seem to find them anywere inside my vbulletin installation folder. How do I know if it's effectively using the cache?

Thanks

--------------- Added 1229004117 at 1229004117 ---------------

i meant .. "set to 90" instead "set to yes"

[unp]

Its in the database.
table postparsed;