amigo nao conheço o kar, mas presumo que ele esteja a barrar pacotes de saida.
Tenta isto
* Click Start, and then click Run.
* Type regedit, and then click OK.
* Navigate to the following key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\Parameters
* In the right pane, double-click the IRPStackSize value
Information If the IRPStackSize value does not already exist, use the following procedure to create it:
o in the Parameters folder of the registry, right-click the right pane.
o Point to New, and then click DWord Value.
o Type IRPStackSize.
Warning Type "IRPStackSize" exactly as it is displayed because the value name is case-sensitive.
* Change the Base to decimal.
* In the Value Data box, type a value that is larger than the value that is listed
If you created the IRPStackSize value, the default value is 15. It is recommended that you increase the value by 3. Therefore, if the previous value was 11, type 14, and then click OK.
* Close the Registry Editor
* Restart the computer