It's horrible. The NYT article says it's one of the biggest holiday weeks in the tourist season. Coptic Easter was Sunday, the anniversary of Israel pulling out of Sinai is today, and this week is a traditional Egyptian spring festival as well.
I don't think anybody's claimed responsibility, but 10 people were detained for questioning, and it's being linked to al-Qaida.
Story from yahoo news here
In a statement posted on an Islamic website, a group calling itself the Abdullah Azzam Brigades, al-Qaeda, in Syria and Egypt, said it carried out the bombings, the AP news agency reported, although the claim has not been verified.
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"Atheism is not only a religion, it's a piss-poor religion that gets straight to the business of shrill bigotry and intolerance." -letrole on Fark.
Now, with conclusive proof of evolution: