iOS 4.3 - Lost ability to select calendar to post event to

Has anyone else had this problem, after I upgraded my iPhone 4 (AT&T) from iOS 4.2.x to iOS 4.3, I have lost the ability to specify which calendar a particular event gets posted to. On iOS 4.2.X, there was an additional tab box that would allow me to select from multiple calendars (work, home, gmail, etc.) and now it appears to have vanished.

I have tried resetting my iPhone (pressing and holding the Home button and Wake / Sleep button at the same time, keeping them both pressed until the Apple logo appears) and that did not help.

I can manually change it to the correct calendar by going into iCal and reassigning a new calendar but I can no longer do it from my iPhone....any ideas?

problem solved

I just found the solution.

For some reason, it turned "calendars" on my mobile me setting to "off" once I turned it on, I regained the ability to select the calendars. I have no idea why the update did not retain all of the settings.

Thanks for your help guys.