sorry, i forgot to post back on this one,
yeah, all working good, i was being a Biff, i'd ended up with an entry in the filter subjects box (doh!) must have pressed tab or something to end up in there by mistake.
Although that said, it has made me aware of that option/tool, because some of the results from usenet-crawler have been a little off when including full tv show name and season+episode number in the main search box