I was having all sort up problems with the ICS update. Severe Lag switching between screens. Internet access would just lock up.
Received a phone call from Verizon Tech and he told me that a hard reset seemed to take care of the problems. He advised doing a back up and removing the memory card and these instructions:
From a home screen, select All apps (located at the bottom).
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From the All apps tab, select Settings.
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Select Storage.
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Select Factory data reset.
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Select Reset phone.
If presented with unlock screen, draw / enter the required pattern, PIN or password.
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Select Erase Everything.
This has resolved all my issues. I did have to reload a few apps but the phone responds faster and the battery life has improved a lot.
