the clock sometimes is very bright and very annoying . is it possible to stop this
You should be able to adjust the brightness to a lower level. If you have the P3 model (which uses the new HD Guide) you can find the settings here.
The older models that don't have the HD Guide however don't have the setting easily accessible. You'll need to go into the User Settings by following the initial steps here and then navigating down to "Front Panel Brightness".
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