Perhaps, but if that's true then maybe it should be added as a recommendation to the upgrade docs

Think of it as a "hidden feature" -- like an Easter Egg...

Roflmao, Well after I do an upgrade I install what mods I have(I know they work as I test them on a test site prior to going live). After all mods are in and before I open my board back to the public I clear the board cache via the control panel. Only a hand full of people had caching issues with their browser.

Forcing a cache rebuilt generally will work ;)...

See i'm not the only one who can have problems !!
ntdoc's in my club now

Glad you got it sorted ...