I have upgraded from .88 to .90 and had the phone locked twice in a couple hours, requiring two battery pulls. Another issue besides everything already reported is that the phone started to mute again while talking. This was not really happening on 88 and is a MAJOR issue as, afterall, this is a phone.
Other than this, the os seems ok. If it weren't for the battery charge, I would go back to 88.
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