Skull one, please tell me where the settings are to set the behaviour for the standby button in a call, as I've not found it yet. The speaker issue for a call was resolved by performing a hard reboot , upgrade and restore. Battery usage is average 20% higher than previous release based on stats captured using monitoring tools from the app store. I also have another iphone4 same spec and not upgraded, so I can compare like for like.
Don't get me wrong, I like my iPhone, but as an IT professional of many years, I am not happy to sit back and let a good product go bad and I think most iPhone users feel the same way.