All of the error are very likely related to the wireless. If the wireless is set to automatically look for available networks and there are a number close by it will chew up both processor and memory resources resulting in Netlogon, time server, and even HDD access errors.
While the Scribbler can have some unexpected problems this is not one of them but is common to all wireless laptops/tablets and their setup.
To make sure it is not a configuration or wireless router problem, physically connect with a network cable, turn the wireless off and try duplicating the problem.
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