First example:

--The problem was discovered by a Halliburton internal audit, and reported to the DOD by Halliburton.

Second example, the fuel overcharges from November of 2003:

--The Army Corps of Engineers cleared Halliburton on this.

Third example, from December 2003:

...Such is the life of a U.S. contractor in Iraq, and one reason U.S. taxpayers are forking over top dollar to have them there. Despite the allegations about expensive fuel imports that have made headlines recently, there may be little outright price gouging. Much of what companies are charging is for hazardous duty (at major engineering companies, that means 45 percent extra, taking engineers up to nearly $900 for a 10-hour day). Air freight is expensive because of the high insurance premiums. Land freight has to contend with highway robbery on a massive scale; no major highway can be considered safe. And while so far no American contractors have been attacked except when they were traveling with a military convoy, they’re hardly considered off-limits by opposition guerrillas and terrorists. While some foreign businessmen go out without escorts, most do not; normally they’ll travel with a PSD (personal security detail) of at least two and sometimes more expatriate armed guards. PSDs are staffed with “operatives” who normally bill $1,200 a day for their services. The security problem hampers accountability as well: USAID’s own inspector general refuses to send its auditors to “a combat zone,” as spokesman Rob Perkins describes Iraq.

Now that oil is flowing and electricity and water are back, thanks to these corporations, where are the stories on that?

It would also help if you used more recent examples. The Newsweek article in particular is a little behind the times, including complaints like this:

Instead, the administration, harking back to the occupation of Japan and Germany, has fought off the international community’s demands for a faster handover to the Iraqis. The open-ended nature of the occupation, combined with Washington’s refusal to explain in detail what its plans for Iraq are, continues to generate ill will, especially among Iraqis.

This was the standard complaint before Bush nailed the June deadline down, and the Left did another neck-snapping 180 to start complaining about handing over power too soon.

I understand that some people cannot hear the word "corporation" without the word "evil" being associated with it, but this is not a valid argument in itself.

American and other Western companies got the contracts because they can do the job, and right now, the Iraqis can't. Maybe they never could. A research project for you: find out who originally built all the oil refineries, power plants, and such in Iraq, especially back over all the pre-Gulf-War years when Saddam was in charge. Iraqis, or foreign contractors?