Audio problems on new Alienware 17 but only when there's no internet

Everytime I used my laptop to watch some videos in the train I had issues with the audio: sound randomly disappearing and minor distortions from time to time. What I found was very surprising: turning on games on Steam (so far it's Hammerwatch and Risen 2) fixed the problem, then I could turn off the game and keep watching videos without problems. Tried figuring out the problem at home and the problems disappeared when I would turn on the wifi... So far I have no idea what is the root of the problem, but it would be great to fix this annoyance.

Hi,
my MBP 13" Mid 2010 running 10.6.4. has similar problems. I like to use it closed lid connected to an external display with apple usb keyboard. In closed lid mode airport connection fails several times or I do get a poor connection, e.g. one or two curves in the airport menu bar icon with significant lower connection speeds. I do connect to a airport extreme n station with does its job rock solid. as my wife uses a two year old macbook and I have got an G4 with a sonnet airport card running both without problems even from a greater distance in our home it seems to me that the macbook pro has serious problems operating with the internal wifi antenna in closed lid mode, maybe due to shielding from the lid?
Has anybody experienced the same problem or successfully found a way to solve this problem? When using open lid mode wifi problems never occurred, but that's not the preferred option for my desktop table.

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    Line state
    Connected
    Connection time
    0 days, 0:09:56
    Downstream
    576 Kbps
    Upstream
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    ADSL settings<script type="text/javascript"></script>
    VPI/VCI
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    Modulation
    ITU-T G.992.5
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    31.9 dB / 26.0 dB
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    0
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    0
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    0 / 4294967200
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    Upstream
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    Interleaved
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    0.0 dBm / 12.9 dBm
    Loss of Framing (Local)
    50
    Loss of Signal (Local)
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    Loss of Power (Local)
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    FEC Errors (Down/Up)
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    CRC Errors (Down/Up)
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    Error Seconds (Local)
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    ADSL line status<script type="text/javascript">// var trClass = ["odd", "even"]; var td1 = ["w3", "Line state", "Connection time", "Downstream", "Upstream"]; var td3 = ["w3", "VPI/VCI", "Type", "Modulation", "Latency type", "Noise margin (Down/Up)", "Line attenuation (Down/Up)", "Output power (Down/Up)", "Loss of Framing (Local)", "Loss of Signal (Local)", "Loss of Power (Local)", "FEC Errors (Down/Up)", "CRC Errors (Down/Up)", "HEC Errors (Down/Up)", "Error Seconds (Local)"]; var td2 = ["", "Connected", "0 days, 0:00:28", "4,099 Kbps", "440 Kbps"]; var td4 = ["", "0/38", "PPPoA", "ITU-T G.992.5", "Interleaved", "16.3 dB / 24.2 dB", "42.5 dB / 22.8 dB", "0.0 dBm / 12.9 dBm", "50", "25", "0", "45 / 4294967200", "0 / 2147480000", "nil / 0", "300"]; // </script>
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    Line state
    Connected
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    0 days, 0:00:28
    Downstream
    4,099 Kbps
    Upstream
    440 Kbps
    ADSL settings<script type="text/javascript">// createTable("normal", trClass, td3, td4); // </script>
    VPI/VCI
    0/38
    Type
    PPPoA
    Modulation
    ITU-T G.992.5
    Latency type
    Interleaved
    Noise margin (Down/Up)
    16.3 dB / 24.2 dB
    Line attenuation (Down/Up)
    42.5 dB / 22.8 dB
    Output power (Down/Up)
    0.0 dBm / 12.9 dBm
    Loss of Framing (Local)
    50
    Loss of Signal (Local)
    25
    Loss of Power (Local)
    0
    FEC Errors (Down/Up)
    45 / 4294967200
    CRC Errors (Down/Up)
    0 / 2147480000
    HEC Errors (Down/Up)
    nil / 0
    Error Seconds (Local)
    300

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