Check out the first post. ;)

I couldn't tell you what the overhead would be any more than the queries used. You would have to check it out but now it is easy to install and uninstall with no more major file edits.

If this hack brought your server to it's knees in 3.0, then you had more going on than just this messing that up. No way this hack can do that. ;)

Well just installed this hack and get the following upon the page loading in a relatively tiny forum...
Page generated in 13.37798 seconds with 23 queries [Server Loads: 0.50 0.24 : 0.14].

Without the hack...
Page generated in 0.83826 seconds with 16 queries [Server Loads: 0.28 0.22 : 0.14].

No other hacks affect it in this way.

That will only be 23 queries on the cache update. The rest of the time it will only add one query. Read the first post!

Do the template edit and adjust the setting.

I'm have install but it doesn't works, why....?

Read this in the first post:

Installation Instructions:

And don't forget the install button. ;)

just followed your instructions to the letter, and im tellin u mate it isnt working!!!

Working for me, so you must be doing smth. wrong.
Are you sure you imported the XML as Product and not as Plugin?

Click :-)

if id have done that,it would have told me it was an invalid file..
as it is, ive followed to the LETTER, and i see nothing....

No, RC2 doesn't tell that the File is invalid :)
Anyway, send me a PM with an ACP Login and i'll take a look.