CAIRO (Reuters) - Egypt's Hosni Mubarak, accused of corruption and involvement in killing protesters, went on trial Wednesday, delighting those who overthrew him and ringing an alarm bell for other autocrats around the Arab world. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=awSjM6EE8Wc:85C_LEUsckE:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=awSjM6EE8Wc:85C_LEUsckE:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/awSjM6EE8Wc)