[eluser]pbreit[/eluser]
I am still not clear on the best way to enable. There are dozens of different suggestions on the forums. Setting enable_query_strings to TRUE is not a good answer since it disables segments (so please stop recommending this by itself; it's a disservice to developers).
I also think it's a problem that CodeIgniter developers feel that it is acceptable to develop web sites without querystrings. Frameworks should help developers develop in good ways. The search function for these forums is a good example of how not to implement search.