IPhone 3GS freezes after 4.3 upgrade

2 days ago I upgraded my iPhone 3GS (factory unlocked) from 4.2.1 to 4.3. After this upgrade, the iPhone freezes and crashes constantly. Sometimes when typing the lock code, when starting any given app, when touching any button, everytime within one minute after restoring. When the phone is working, it gets no network (just WLAN). Provider is Vodafone.
After each crash, a full restore is required (which takes a lot of time), just to work for another minute or so. Using a different SIM card from O2 helps by not crashing, but all 3rd party apps do not work.
Going back to 4.2.1 did not work at all (tried all options), going back to 4.1 did not give me access to my backup.
This situation is a nightmare if you rely on your phone. And it seams I am not the only one having this issue. Just search for "iOS 4.3 3GS crash Vodafone".
When can I expect a patch of iOS 4.3 ?
Dirk

I am having the same issues with my 3gs. It is constantly crashing whenever i run any apps for more than 3 to 5 minutes. I have reinstalled and backed up everything but it is still having issues.

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