尝试在我的 OSX 10.6.8 上安装 PostgreSQL：
$ brew install postgresql
输出（尝试 1）：
==> Installing dependencies for postgresql: ossp-uuid
==> Installing postgresql dependency: ossp-uuid
==> Downloading ftp://ftp.ossp.org/pkg/lib/uuid/uuid-1.6.2.tar.gz
curl: (7) couldn't connect to host
Trying a mirror...
==> Downloading http://gnome-build-stage-1.googlecode.com/files/uuid-1.6.2.tar.gz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/ossp-uuid/1.6.2 --without-perl --without-php --without-pgsql
==> make
make: *** [uuid_sha1.lo] Error 1
make: *** Waiting for unfinished jobs....
make: *** [uuid_md5.lo] Error 1
make: *** [uuid.lo] Error 1
make: *** [uuid_prng.lo] Error 1
READ THIS: https://github.com/mxcl/homebrew/wiki/troubleshooting
输出（尝试 2）：
==> Installing dependencies for postgresql: ossp-uuid
==> Installing postgresql dependency: ossp-uuid
==> Downloading ftp://ftp.ossp.org/pkg/lib/uuid/uuid-1.6.2.tar.gz
Already downloaded: /Library/Caches/Homebrew/ossp-uuid-1.6.2.tar.gz
==> ./configure --prefix=/usr/local/Cellar/ossp-uuid/1.6.2 --without-perl --without-php --without-pgsql
==> make
i686-apple-darwin10-gcc-4.2.1: vfork: Operation timed out
gcc-4.2: vfork: Operation timed out
make: *** [uuid_prng.lo] Error 1
make: *** [uuid_md5.lo] Error 1
make: *** [uuid.lo] Error 1
READ THIS: https://github.com/mxcl/homebrew/wiki/troubleshooting
不知道该怎么办。阅读此链接是无用的。有人吗？
更新：试过 brew doctor ，它没有给我任何有用的 AFAIK，只是一些关于它在哪里寻找 Python 的警告：
Warning: "config" scripts exist outside your system or Homebrew directories.
`./configure` scripts often look for *-config scripts to determine if
software packages are installed, and what additional flags to use when
compiling and linking.
Having additional scripts in your path can confuse software installed via
Homebrew if the config script overrides a system or Homebrew provided
script of the same name. We found the following "config" scripts:
/Library/Frameworks/Python.framework/Versions/2.7/bin/python-config
/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7-config