Sorry guys,
I had an issue where a 'multicheckbox' that didn't work anymore. No matter which browser I use (IE, FF, Chrome have been tried), I couldn't tick any box. I couldn't figure out what the issue was, panicked and started this thread (after consulting documentation and searching the forums, of course!). I then calmed down, checked my local site and found everything was working fine there. So I uploaded my database to the live site again and this time the check boxes worked. Very odd, as I had no apparent issues when uploading it before, but there you go...
I would have deleted this thread, but I am not allowed to, so feel free!
Thanks!
nant