I\'ve done something to break my Bash Shell Prompt in OS X (10.5.7) Terminal.
This is the PS1 that I had configured:
PS1=\'\\[\\e[1;32m\\]\\h\\[\\e[0m\\]
This stackoverflow thread seems relevant. As someone noted in that thread, the Bash FAQ at mywiki.wooledge.org discusses how to properly quote color codes in Bash prompts (FAQ 53), and the proper invocation of terminal colors (FAQ 37).