Internally displaced people (IDPs) are worried that a tenuous peace deal may falter, worsening their chances of returning home soon.
More than 200,000 people remain in camps three months after ethnic clashes killed 1,200.
Kofi Annan's persistence yields a power-sharing deal between Kenya's President Kibaki and opposition leader Raila Odinga.
Secretary of State Condoleezza Rice arrived in Kenya Monday to press for a power-sharing agreement.
The country's two political rivals agreed to help ease distribution of humanitarian aid, but not to a power-sharing government.
The ethnic crisis is taking center stage at a three-day African Union summit in neighboring Ethiopia.
Former UN chief Kofi Annan launched formal peace talks Tuesday as a fresh round of reprisal killings swept the country.
Hezron Masitsa of the Alternatives to Violence Program in Nairobi, Kenya, says the time has come to find common ground.