diff --git a/DownloadDebianPackages.md b/DownloadDebianPackages.md
index 06020af..1c2be27 100644
--- a/DownloadDebianPackages.md
+++ b/DownloadDebianPackages.md
@@ -1,24 +1,58 @@
 # Debian Packages
 
-[""Install Tahoe""](http://allmydata.org/source/tahoe/trunk/docs/install.html) 
-tells how to build Tahoe from source.
+Tahoe is compatible with various releases of Debian/Ubuntu. There are two
+forms of compatibility: "runs-from-source" and "runs-from-package". Both are
+pretty easy. If you just want to download a binary package and install it,
+you'll need the "runs-from-package" kind of compability.
 
-Precompiled Tahoe packages are also available for Debian-like systems, using
-recent releases of Debian or Ubuntu. There are also precompiled packages for
-several of the necessary support libraries which are not already in the
-debian distribution:
+## Compability
 
- * debian "etch": Tahoe and support libraries
- * debian "lenny" (not yet released): use "etch"
- * debian "sid": support libaries only, use "etch" for the Tahoe package
+(note, the contents of this table have not yet been verified)
 
- * ubuntu "dapper": not supported since tahoe-0.4.0 (July 2007)
- * ubuntu "edgy": Tahoe and support libraries
- * ubuntu "feisty": Tahoe and support libraries
- * ubuntu "gutsy": Tahoe and support libraries
- * ubuntu "hardy": Tahoe and support libraries
+| | | | |
+|---|---|---|---|
+|platform|runs-from-source|runs-from-package|support packages available|
+|Debian "etch"|yes|?|yes|
+|Debian "lenny"|yes|yes|yes (use etch)|
+|Debian "sid"|yes|yes|yes|
+|Ubuntu "dapper"|yes|no|no|
+|Ubuntu "edgy"|yes|?|yes|
+|Ubuntu "feisty"|yes|no?|yes|
+|Ubuntu "gutsy"|yes|no (#149)|yes|
+|Ubuntu "hardy"|yes|yes|yes|
+|Ubuntu "intrepid"|yes|yes|yes|
 
-allmydata.org hosts an APT repository at <http://allmydata.org/debian/> . To
+"runs-from-source" means that it is possible to take a Tahoe source tree
+(either from a downloaded tarball or from a darcs checkout) and run
+`python setup.py build` on it, then run `./bin/tahoe` to use it. This
+approach is described on the
+[http://allmydata.org/source/tahoe/trunk/docs/install.html ""Install Tahoe""]
+page.
+
+(if you can run-from-source, you should also be able to use
+`python setup.py install` to copy tahoe into /usr/bin/tahoe (or
+whatever is appropriate for your system), so you can use it after the source
+tree has been removed. However, using `setup.py install` will modify your
+/usr partition without the knowledge of the Debian package-management tools,
+making it more difficult to coordinate dependencies with other packages,
+and making it difficult to remove Tahoe later)
+
+"run-from-package" means that it is possible to download a pre-built Tahoe
+binary package from the APT repository on allmydata.org (as well as packages
+for any dependencies that are not otherwise available in the Debian/Ubuntu
+release), and then run /usr/bin/tahoe to use that installation. It also means
+that these .deb packages can be built from a source tree on those platforms
+(which the allmydata.org buildbot does automatically, to populate the APT
+repository).
+
+"support packages available" means that the allmydata.org APT repository has
+debian packages available for several of the libraries which Tahoe requires
+(those which are not already in the debian release). This might make it
+easier to build Tahoe from source (fewer things to download).
+
+== Downloading/Installing Binary Packages ==
+
+allmydata.org hosts an APT repository at http://allmydata.org/debian/ . To
 install packages from this repository, add the following lines to your
 `/etc/apt/sources.list`, replacing the word `$DIST` with one of
 `etch`, `sid`, `edgy`, `feisty`, or `gutsy` as