in version 0.9
conf/_admin.php line 128

/**
 * by default, most servers limit the size of uploads to 2048 KB
 * if you want to set it to a lower value, here it is (you cannot set a higher value)
 *
 * @global int $fileupload_maxk
 */
$fileupload_maxk = '96'; // in kilo bytes

in version 1.8.x

goto the backoffice
tab 'Application settings'
tab 'files'

Upload options
Enable upload: Check to allow uploading files in general. 
Maximum allowed filesize: 96 KB (This cannot be higher than your PHP/Webserver setting!)

i can't set it in the app settings. there isn't any save button to save the settings.

i'm using 1.8.2 btw.

Isn't there an update button ?

oh, just realised i wasn't logged in as admin.
doh! :oops:

thanks.