When begiak gets text from some pages, the text isn't chopped correctly.  That is, IRC messages have a character limit, and begiak is supposed to be aware of that and display only as much text from the wiki page as will fit in a message along with a url to the page.

This is one such problematic page:

.awik Руководство по созданию новой языковой пары

Other pages in Cyrillic seem unaffected by this bug.  Figure out what's causing this and then document and fix it.  Make sure it doesn't affect the general wikipedia plugin.