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Failed to access to reference site [no issue]

Hi, i'm getting the message "Project communication failed: attempting access to reference site" since 12 hours every time the client requests an update. Tasks are being reported and downloaded correctly though.
This happens only to my Windows 7 64 / 6.10.60 64 bit (ATI-GPU, intel i7) client. No message on Ubuntu / 6.10.58 64 bit (amd64x2, no usable GPU). The message also appears on the Windows machine when only requesting for CPU jobs.
Both machines running on a profile with C4CW, DDDT2, DDDT1, FLU, CEP1, Beta selected.

Just FYI.

17/05/2012 09:33:30 World Community Grid Reporting 2 completed tasks, requesting new tasks for CPU
17/05/2012 09:33:33 World Community Grid Scheduler request completed: got 1 new tasks
17/05/2012 09:33:53 Project communication failed: attempting access to reference site
17/05/2012 09:33:54 Internet access OK - project servers may be temporarily down.

...

17/05/2012 16:49:32 World Community Grid Requesting new tasks for GPU
17/05/2012 16:49:35 World Community Grid Scheduler request completed: got 0 new tasks
17/05/2012 16:49:35 World Community Grid Message from server: No tasks sent
17/05/2012 16:49:35 World Community Grid Message from server: No tasks are available for Computing for Clean Water
17/05/2012 16:49:35 World Community Grid Message from server: No tasks are available for Discovering Dengue Drugs - Together - Phase 2
17/05/2012 16:49:35 World Community Grid Message from server: No tasks are available for Discovering Dengue Drugs - Together - Phase 2 (Type A)
17/05/2012 16:49:54 Project communication failed: attempting access to reference site
17/05/2012 16:49:55 Internet access OK - project servers may be temporarily down.
[May 17, 2012 3:37:22 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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Re: Failed to access to reference site [no issue]

Issue or No Issue, not a single blib here... GPU's disabled... work flowing as normal both on Win and Lnx.

--//--
[May 17, 2012 3:50:30 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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Re: Failed to access to reference site [no issue]

Client also requests for GPU's if i select "Use GPU never", so i can't try that :/

Tried with DDDT1 only:
17/05/2012 17:53:23 World Community Grid update requested by user
17/05/2012 17:53:25 World Community Grid Sending scheduler request: Requested by user.
17/05/2012 17:53:25 World Community Grid Requesting new tasks for GPU
17/05/2012 17:53:29 World Community Grid Scheduler request completed: got 0 new tasks
17/05/2012 17:53:29 World Community Grid Message from server: No tasks sent
17/05/2012 17:53:48 Project communication failed: attempting access to reference site
17/05/2012 17:53:49 Internet access OK - project servers may be temporarily down.

And C4CW only:

17/05/2012 17:53:55 World Community Grid update requested by user
17/05/2012 17:54:00 World Community Grid Sending scheduler request: Requested by user.
17/05/2012 17:54:00 World Community Grid Requesting new tasks for GPU
17/05/2012 17:54:03 World Community Grid Scheduler request completed: got 0 new tasks
17/05/2012 17:54:03 World Community Grid Message from server: No tasks sent
17/05/2012 17:54:03 World Community Grid Message from server: No tasks are available for Computing for Clean Water
17/05/2012 17:54:21 Project communication failed: attempting access to reference site
17/05/2012 17:54:22 Internet access OK - project servers may be temporarily down.

The message comes sometimes with quite a long delay (see bold text). However, everything is working though. Got the first message at 5:05 AM MET, 10 minutes earlier those didn't show up.
[May 17, 2012 4:00:51 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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Re: Failed to access to reference site [no issue]

Maybe a polluted local DNS cache? Few days ago in the Computer tips thread I posted a nifty tool link to flush DNS and do an ''on-the-fly'' DNS server change. Worth trying (but it only works on Win)

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[May 17, 2012 4:03:42 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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Re: Failed to access to reference site [no issue]

Thanks SekeRob.
Did a restart, DNS flush, disabled the virtual network adapter (installed a few weeks ago), flush again, log off and on again. Still getting the message.
Ah well, looks like it's a local thing. I'll ignore it.
[May 17, 2012 4:35:03 PM]   Link   Report threatening or abusive post: please login first  Go to top 
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