It's not checked, because it doesn't exist. When I go to Settings > Accounts > My Google Account, it shows me the options to sync all three, and I've seen screenshots with a checkbox to the right, but for some reason it just isn't there. I have no idea why, either.[/QUOTE]
I have the same exact problem! Only have the three sync options; Calendar Contacts and Gmail. I don't have a check box or anything. I even removed the account and re-added the account and still don't have the sync option. Its very annoying to refresh the mail to get the notifications
Maybe try toggling background data off then on in phone settings > data manager
Also, if you have the power widget installed, make sure that the two arrow in a circle is turned on (that's sync).
I know this for sure: if I toggle off background data, the checkboxes next to gmail, contacts, and calendar disappear.
You might have found a bug.
There is an app called gmail notifier, works great. Gives a notification of every new email. Without it I was only getting a notification of the first new email. If I didn't check my email on that first notification then the next new email that came in gave me no notification. Gmail notifier solved that problem.
Cool radryan, glad you got it sorted out.
Wow, google has "declined" the enhancement.