I've got two email accounts on my iPhone: GMail and MobileMe. I have GMail set to forward to MobileMe to see how well push email works.
For what I can tell, push email is still having issues. For a while, I was getting the MobileMe messages before the GMail messages, as I only fetch GMail once per hour. Now, I'm back to my original problem: mail doesn't get pushed to my iPhone, and the only time MobileMe mail is retrieved is by manually fetching it.
Has anybody else seen this, and how did it get fixed?