Watir general mailing list has moved a few times and that has complicated searching of archives. I have created Watir Google Custom Search Engine that "searches all Watir related mailing lists, forums and groups (and nothing else)." At least ones that I am familiar with. To be specific:

Watir General at Google Groups

Watir General at OpenQA Forums
Watir Developers at OpenQA Forums

wtr-general at The Mail Archive

Wtr-general at RubyForge
Wtr-development at RubyForge
Wtr-core at RubyForge