First bug I found is that I left the the Hal Gender/Age plug-in both in the main script and as a seperate brain plug-in, so if you ask Hal what its gender is, it will tell you twice. I'll remove it from the main script with the next release.
For now, you can unselect the Gender/Age plug-in in Hal's options to remove the double response. I made some minor tweaks to the plug-in since 6.1. Now the user can ask Hal what the user's gender is, since I noticed people like to test online Hal like that.