Robby Gunawan wrote on 10/21/2010:

how do I install / update to my system?

Normally you should patch the file(s) in the source package.

You can compile Dovecot from the official sources (apply the patch
before), download/install Dovecot from Mercurial (hg.dovecot.org) or
open a bugreport for the package maintainer so that the bug can be
fixed for your distribution.

-- Daniel