In case you're interested in the actual sticking points:
1) Israeli Jews were being allowed to keep most of East Jerusalem as well as their illegal settlements in Palestine
At the opening of Camp David, Barak warned the Americans he could not accept giving the Palestinians more than a purely symbolic sovereignty over any part of East Jerusalem.
[12]
The Israeli team proposed annexing to Israeli Jerusalem settlements within the West Bank beyond the Green Line, such as Ma'ale Adumim, Givat Ze'ev, and Gush Etzion. Israel proposed that the Palestinians merge certain outer Arab villages and small cities that had been annexed to Jerusalem just after 1967 (such as Abu Dis, al-Eizariya, 'Anata, A-Ram, and eastern Sawahre) to create the city of Al-Quds, which would serve as the capital of Palestine. The historically important Arab neighborhoods such as Sheikh Jarrah, Silwan and at-Tur would remain under Israeli sovereignty, while Palestinians would only have civilian autonomy. The Palestinians would exercise civil and administrative autonomy in the outer Arab neighborhoods. Israeli neighborhoods within East Jerusalem would remain under Israeli sovereignty. The holy places in the Old City would enjoy independent religious administration. In total, Israel demanded that Palestine's territory in East Jerusalem be reduced to eight sections including six small enclaves according to Palestine's delegation to the summit.
2) The land being given to Israeli settlers in the West Bank would have meant Palestine was broken up into up to 5 different discontinguous territories (Gaza, an isolated island in East Jerusalem, and either 2 or 3 separated sections of the West Bank). This is an untenable manner to operate a country when your mortal enemy controls your own movement between each little separate part of your territory.
The Palestinians reacted strongly negatively to the proposed cantonization of the West Bank into three blocs, which the Palestinian delegation likened to South African Bantustans, a loaded word that was disputed by the Israeli and American negotiators.[18] Settlement blocs, bypassed roads and annexed lands would create barriers between Nablus and Jenin with Ramallah. The Ramallah bloc would in turn be divided from Bethlehem and Hebron. A separate and smaller bloc would contain Jericho. Further, the border between West Bank and Jordan would additionally be under Israeli control. The Palestinian Authority would receive pockets of East Jerusalem which would be surrounded entirely by annexed lands in the West Bank.[19]
3) The lack of Right of Return as guarenteed in the Geneva Convention, the Universal Declaration of Human Rights, UN General Assembly Resolution 194 and UN General Assembly Resolution 3236. The right of those people who were forcibly displaced from their land to return if they so choose. Israel rejected this on blatant demographic terms (the equivilent of admitting that genocide - the eliminating of a certain group of people from the land - had always been their aim).
According to U.S. Secretary of State Madeleine Albright, some of the Palestinian negotiators were willing to privately discuss a limit on the number of refugees who would be allowed to return to Israel.[28] Palestinians who chose to return to Israel would do so gradually, with Israel absorbing 150,000 refugees every year.
The Israeli negotiators denied that Israel was responsible for the refugee problem, and were concerned that any right of return would pose a threat to Israel's Jewish character. In the Israeli proposal, a maximum of 100,000 refugees would be allowed to return to Israel on the basis of humanitarian considerations or family reunification.
4) Israel demanded that Palestine be demilitarized, that Israel would be allowed to have radar stations within the West Bank, that Israel could deploy soldiers on the West Bank/Jordan border, and that Israel retained the right to deploy troops into Palestine when it felt appropriate. This was a fairly large interferance with Palestinian soveignity, though from what I understand it was actually less of a sticking point than East Jerusalem, the carving out of the West Bank into different sections, and Right of Return.
5) Israel demanded that Palestine give up the right to negotiate any future demands, ever. So if they accepted the deal on Israel's terms, they could never negotiate for any greater control in East Jerusalem, any Right of Return for more families, any change to the status of Israeli military installations within their own borders, etc.