Rick - they do not. I just deleted all of Homebrew from /usr/local and reinstalled. Same problem.
brew doctor
jsut hangs.
brew config
produces the output below and then hangs
[neur-kalamac:/usr/local] gkalamangalam% brew config
HOMEBREW_VERSION: 1.1.0
ORIGIN: [
github.com]
HEAD: b7abd33475b98598b414f9c4ee2e20249855437b
Last commit: 2 hours ago
Core tap ORIGIN: [
github.com]
Core tap HEAD: 375a83c1af8c25290e5d41001e93e335c540e857
Core tap last commit: 20 minutes ago
HOMEBREW_PREFIX: /usr/local
HOMEBREW_REPOSITORY: /usr/local/Homebrew
HOMEBREW_CELLAR: /usr/local/Cellar
HOMEBREW_BOTTLE_DOMAIN: [
homebrew.bintray.com]
CPU: octa-core 64-bit ivybridge
Homebrew Ruby: 2.0.0-p648