On Fri, Dec 26 2008, jidanni@jidanni.org wrote:

> One bad character locks me out of all newsgroups... until when, one
> doesn't know. Great denial of service attack.
>
> Debugger entered--Lisp error: (error "Can't rfc2047-encode `\x2563d\x2587c \x256cf\x7ecf'")
>   signal(error ("Can't rfc2047-encode `\x2563d\x2587c \x256cf\x7ecf'"))
>   error("Can't rfc2047-encode `%s'" "\x2563d\x2587c \x256cf\x7ecf")
>   rfc2047-encode(5 10)
>   rfc2047-encode-region(1 12)
>   nnrss-mime-encode-string("Re: \x2563d\x2587c亲\x256cf经历 3")
>   nnrss-check-group("BDSM \x25322\x25cf0\x25d37\x268a2" "")
>   nnrss-request-group("BDSM 一般討論" "" nil)
>   gnus-activate-group("nnrss:BDSM 一般討論" scan)
>   gnus-get-unread-articles(nil)
>   gnus-group-get-new-news()
>
> Input was http://www.bdsm.com.tw/phorum/rss.php?1

A minimal recipe to reproduce this in Emacs 22 is this: