GM Corn 'Toxic And Fatal'?

I received an email from GeneEthics.Org a few minutes ago with a rather disturbing subject line:
“Yes, GMOs are poisonous! New French research published today”
It referred to an article on Nouvel Observateur which appears to contain information regarding research linking genetically modified corn with cancer and death in lab rats.
You can read a copy of the article here – but please bear in mind that link uses Google Translate – and as the old saying goes some things often become lost in translation.
If my understanding of the article is correct, these are huge claims.
At the time of writing, I can’t find more on this latest research aside from the article mentioned above – which is hardly a scientific journal (and I’m no scientist); but I was able to discover a little more about previous claims by Professor Gilles-Eric Séralini (the researcher) along similar lines, which have come under scrutiny.
GM Corn & Organ Failure: Lots of Sensationalism, Few Facts
Feeding studies and GM corn MON863 
Further searching revealed a bunch of articles either supporting or criticising Professor Gilles-Eric Séralini’s research.
As readers would know, I’m no fan of GM crops and even less a fan of Monsanto, but after everything I’ve skimmed through in the last half hour, I am totally confused. Is the professor a nutcase (or worse) or a serious scientist victimized by his peers, subjected to a Monsanto smear campaign and government cover up? I really don’t know.
I’m just thinking we should perhaps treat this news with a grain (or two) of salt at this stage and see what evolves. If it is wrong or exaggerated, it’s certainly not helpful in the battle against frankenfood. Just because GM proponents may “Deceive, Inveigle, Obfuscate” (one for the X-Files fans out there), fighting fire with fire is not going to help in this situation.
One thing I have no doubt about is that the article will help the Professor sell a few more copies of his book :).
Genetic Modification Vs. Selective Breeding