[kh99]

I'm not an expert on this subject, but a couple things you can easily do: use Firefox and install the Firebug addon, then go to your page, open Firebug and go to the Net tab, then reload your page. This gives you a graph of everything the browser requests and how long it took.

Also, you can put the site in debug mode by editing your includes/config.php and finding the $config['Misc']['debug'] line, and changing it to true. or if you can't find it, insert this line (anywhere after the first line):

$config['Misc']['debug'] = true;

then when you load a page, at the bottom you'll see a line like:

    Page Generation 0.17364 seconds    Memory Usage 8,303KB    Queries Executed 27 (?)

and if you click on the (?) you'll go to a page that lists all database queries and how long they took. If you find one that took a very long time, you can probably figure out if it belongs to a plugin.

You should set debug back to "false" when you're done. Or if you want, there are ways to set it up so it's only in debug mode for you: www.vbulletin.org/forum/showthread.php?t=265999 , then you can leave it like that for as long as you want.