Well i from smirc's post I owe a few people apologies... but now i'm kinda curious... does the search only work with posts back a certain date? I'm here typing binary and tutorial in the search engine and those threats still aren't coming up.
I've noticed that the search engine returns unpredictable results. For example when I've search for threads that I know exist, the search comes up blank. This applies to the advanced search too. Something for the new admins to look into.