I think you're right FJ. The only language most of the big baby food companies talk is the language of money which is why I'm doing my bit by boycotting them (my shopping drives DH crazy - first there's all the companies I boycott then there's the additive issues...lol).
Anyways...
I've just emailed the Minister for Health and Aging Nicola.Roxon.MP@aph.gov.au and submitted a web complaint form to the ACCC.

This is the letter I sent to Nicola Roxon and I sent an abbreviated version (minus the last sentence) to the ACCC. Feel free to adapt it

Dear Ms Roxon,
I'm writing to you in regards to the labeling laws for baby foods.
It is of particular concern to me that there is a significant discrepancy between the recommendations of WHO and numerous other bodies and the labels on packaging for baby foods. The World Health Organisation and all the the state governments of Australia recommend that solids not be introduced until after a baby is 6 months old yet it is common for baby foods such as baby cereals and the mush in a jar to be labeled 4 months +.
As a first time mother I was silly enough to look at the jars in the supermarket and assume that if they were labeled as being suitable for a baby that is 4 months old then it was ok to feed them to a baby this young. Now a couple of years later I'm a little more knowledgeable and I'm horrified that I fed my son solid foods months before he was mature enough for them to be appropriate. Thanks to the inaccurate labeling I increased his risk of allergies, asthma and obesity significantly.
I worry that many other mothers will make the same mistake as me for the same reasons. Of course it's my responsibility to educate myself but I did assume that because of issues like truth in advertising that if something is labeled as suitable then it is safe to feed to a baby.
I'm addressing my concerns to you because I feel that since the early introduction of solids has adverse affects on health it is an issue that falls under the umbrella of the Health portfolio.
Thank you for your time. I look forward to hearing from you.
Regards,
crazy person's name deleted
Now I just have to figure out who else to nag