Will try that out. Trying to achieve exactly what I said ... not allowing users to put unreasonably large files for download on their websites.
why can't you run a script to do that file-size checking on the server ?? whenever an addition is made to any user directory u might do exactly that. then again u could put up userquotas ? or another option being running a script to parse the webpages of the users and remove the links to such heavy files.
just my 2ps of course, C