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DNS Response Error: Throttled?

In recent weeks, I have been unable to download from certain sites or to download certain files, such as Adobe Flash downloads, Norton updates and programs, and some images files.  A "Web Acceleration Client Error (508.2) - DNS Response Error" screen is displayed.  But this does not occur, I've recently discovered, with a 64bit laptop connected to the same router and satellite modem.

I use Hughesnet satellite with Windows 7, IE9, Norton Internet Security and Malwarebytes Anti-Malware, on a 32bit Dell PC, connected to a 2-PC home LAN using ethernet cables.

Any suggestions for how to determine why the laptop works and my two desktops do not?

Thank you.

David Salmon
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Top Expert 2013
Commented:
Apparently this is a long standing problem Hughesnet.

I found this when I googled  that error:

http://www.dslreports.com/forum/r19083428-HN7000S-Direct-Connection-vs-Manual-Proxy

I don't know if knowing the source of the problem actually helps but at least you have an idea who to blame.


Cd&

Author

Commented:
I use the HN9000 with the proxy set up as they require.  I have been to tier 4 tech support at Hughesnet, and the problem was replicated on their testbed equipment.  After referring it to the engineers, they inexplicably suggested a new modem, although the tech support's modem had the same error messages.  Nothing changed by using the new modem, but now I cannot get through to tier 4 and messages to them through tech 1s have not produced a callback.  I would suspect some sort of throttling by Hughesnet, but anything to prevents Norton, Adobe, and sometimes Windows from updating surely can't be intended.

I discovered that laptop works since then and I'm looking for a good utility that will help me identify the differences, other than that it is 64bit and the desktops are 32bit.

Thank you for your help.  I did not find those messages when I looked at DSLReports.

David
I replied too soon: it turns out the difference between the desktops and the laptop is that the laptop did not have Proxy Server settings turned on.  Turning it off on the desktops allowed them to access the inaccessible sites, but the speed is slow.  I will investigate further, but you have answered my question and deserve the points.

Thank you.

David

Author

Commented:
I am not adding my comment as part of the solution: I just checked the Expert comment, not mine.  My comments do explain what the link referenced by the Expert indicates.
Top Expert 2013

Commented:
I got that link I posted by googling :Web Acceleration Client Error (508.2)

and theres a quite a number of links including mozilla support where Hughesnet is specifically mentioned.

I am pretty much convinced that they are throttling, and doing it pretty badly apparently.


Cd&