In the past, INI files had a 64kB size limit before things started not working right. I believe that's no longer the case, but I could be wrong. If you want to avoid that kind of thing, then you'll need to save the data in another format, such as a text file, or use a hash table (without INI formatting). Keep in mind that a normal hash table doesn't save it's data in as "clean" format as INI, so it isn't as easy to look and/or edit the data from the file itself. And although a text file could be stored in the same format as INI, it would require more code to handle it (no using $ini() or $readini() to quickly get the data you're looking for).
Someone else here who knows more about the inner workings of mIRC/etc, may be able to clear up if there's still a size limit.
Last edited by Riamus2; 06/06/11 12:08 AM.