Topic: Wrong limit in Topic subject

I upgraded from 1.4.1 to 1.4.4, but when I try to post a new topic, I see the message "Topic subject is longer 70":
1. It does not work if the topic subject has only 1 short word.
2. Where can I change limit 70?


I use Czech language and Oxygen style:
http://www.mo-na-ko.net/php/portal/index_punbb.php

Thanks.

Best regards
ladous