Running 1.4.2 on linux here. Evoked the spelling checker on a short article and fixed the errors it found. Then I ran the source through pdflatex.
While reading the typeset document, I saw the word, 'th .' "How strange," I thought. Sure enough, the spelling check missed that, but a search for the string found it. I've no idea how this slipped past the gates, but it's worrisome that I cannot count on aspell (I don't recall if it's that or ispell) to catch my typos. Rich -- Richard B. Shepard, Ph.D. | The Environmental Permitting Applied Ecosystem Services, Inc.(TM) | Accelerator <http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863