The interim government in Egypt hasn't seemed to progressed that much, and people are getting disappointed. I would not be surprised if a similar situation happened in Libya, especially since the US (disguising itself as NATO) intervened in the situation. After all, we don't know a whole lot about the rebel leaders. Sure we're under the impression that they want to institute a better government, but that doesn't mean it will happen. Additionally I would never trust any sort of interventionist military action the United States participates in. Look at the Contras. Look at the Mujahideen. Look at Iraq. Look at Lebanon, etc., etc., etc. Heck, the US once assassinated the leader of Chile, and it was even allied with Hosni Mubarak's government.
But, I should probably mention that I was opposed to any intervention in the first place, and strongly agree with politicians like Dennis Kucinich on the issue.