Also, you might consider upgrading to the latest version of slackpkg -- see http://slackpkg.org
for version 2.52. There were lots of bugs fixed from 2.09. In fact, there have been several more bugs fixed since then, and PiterPunk said that he is planning to release version 2.60 today, so you might hold off until it releases.
Note that you might want to blacklist the slackpkg package in slackpkg's own config file; otherwise, it will try to downgrade itself to the version on the 11.0 mirror.