iPhone 2.1 software update - Not so good after all

Since I updated my iPhone 3G to 2.1, I’ve had the following issues:

- Occasionally: The phone goes into “Call Ending…” mode after a call is finished or “End Call” is pressed and doesn’t come out of that for some time.

- Rarely: Call is made but the screen is blank. As if you’ve held your hand in front of the proximity sensors.

- Often: GMail IMAP “Push” (15 minute pulls) doesn’t work. A manual kick (starting the mail app) is needed.

All and all, it’s made my iPhone less stable.

UPDATE: Gmail push/fetch has stopped completely after a couple of restarts. Here is a thread at Apple support forum on the iPhone 2.1 problems with email fetch/push.