This is the Mubarak reference on Debka last week. This references two possible explosions at Ras Satan. But I found over 700 references to three explosions and only 3 (plus this) referring to four explosions.
If you see further references on the boards it might indicate more trouble in Egypt. Either the fourth explosion is yet to occur, or the fourth explosion was at Ras Satan but not widely known.
http://www.debka.com/article.php?aid=915
(snipped)
The triple terrorist attack in Sinai Thursday night, October 7, was aimed against Israelis and Egyptians. Its central targets were:
1. The Taba Hilton which was crowded with Israelis.
2. The Nueiba resort, further south on the Red Sea coast of Sinai.
DEBKAfile’s exclusive sources reveal the bomb car was timed for the arrival of a group of 40 high-ranking Egyptian officials, most of them close friends of Gemal Mubarak, son and heir apparent of the Egyptian president. Twenty were hurt, some very seriously, and flown out by one of the two presidential planes sent over to remove them from danger without delay. Among them was the head of the ruling party’s economy committee, the director general of Egyptian airports and a son of a former deputy prime minister who is now a leading financial figure. That the terrorists had advance knowledge of this high-powered group’s private visit to the resort is a measure of their efficient and well-placed intelligence, not only in Sinai, but in Cairo too.
3. Ras al-Satan between Taba and Nueiba boasts a cluster of straw-thatched restaurants, popular with Israelis and Egyptians alike. Some witnesses report two suicide cars, not one, exploded at its center.
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Here's yet another version:
http://www.chinapost.com.tw/i_latestdetail.asp?id=23211
1st car: The Taba Hilton was at 95 percent capacity with up to 900 guests and 500 employees inside when a car crashed into the lobby. Officials said the suicide bomber detonated 200 kilograms (440 pounds) of explosives.
2nd and 3rd cars: Within two hours, two more car bombs detonated nearly simultaneously outside the backpacker-oriented beach huts of Ras Shitan, 55 kilometers (35 miles) to the south, where many Israeli youths were spending the holiday.
4th car: South Sinai Gov. Mustafa Afifi said an Egyptian security guard was suspicious about one of the cars in Ras Shitan and intervened, preventing it from blowing up close to lodging.