Could you post your state code here? What is the weather in the state where the gateway is located? (it's always located in another state from you). How long has this been happening?
Please note that the Hughesnet reps are not here on weekends, so it will be next week before they can look into this. Fellow customers may be able to get you started, though.
*I am not a Hughesnet employee or representative. This is a customer-to-customer tech support community, and I am a customer.
It's very unlikely that this is a firmware issue, as it would be affecting everyone with the HT2000W if it were.
What is the state code you're seeing when this happens? You mentioned that the sat signal is dropping. What is it dropping to?