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I believe that you may have provided your own solution, just disconnect the SlingLink. If you can't determine which device is the issue, remove one from the equation. Connect one Slingbox directly to the router, connect to the Slingbox and wait to see if the Slingbox and router/Internet freeze. If they do not and you just want to be sure, connect the SlingLink like you had it before and test the Slingbox. Then, wait and see if the Slingbox and router/Internet freeze.
Then you just have to ask yourself "which one worked?"
Hope this information helps.
Answers Forum Moderation Team