Problems after installing update 2.3.4

Android version 2.3.4, software number 4.06.605.3

I can no longer access most of my hotmail emails, it acts like it's going to go to the emails, I can see them listed, but it never opens them.

I have a missed call notification on my lock screen, but I have cleared all notifications, rebooted phone, called the person back, cleared the call from the call log (the missed one), then cleared all call history, and I'm still getting the notification on the lock screen.

I really hate the little green pointer when I'm typing and trying to place the cursor somewhere, can I turn that off???

Does anyone know how to fix these? Or can I just go back to the previous version?

 

Anyone?