I just sent a message to a member ending with the three characters: '"', ')' and '.' (a quote, a closing parenthesis and a full stop) in that order and it rendered a wink smiley instead of the closing parenthesis.
From my understanding, the wink smiley is supposed to be invoked by the ';' and ')' characters.
In either case, I think a "don't parse smileys" button would be useful.
Example:
"
.
