Hi Michiel,

After discussing with my colleagues, we have to confirm following points:

1. Does the issue only occur on one computer or some computers? If all
computer has same issue, we need focus on the issue on server side.
2. Please try to run following command in new network:

DFSUtil /SPCFlush

Does it work?

3. If the issue still persists, could you please collect more information
to troubleshoot the problem?

Collect MPS Report
=====================
1. Download proper MPS Report tool from the website below.

Microsoft Product Support Reports
http://www.microsoft.com/downloads/d...C7C-7CA5-408F-
88B7-F9C79B7306C0&displaylang=en

2. Double-click to run it, if requirement is not met, please follow
the wizard to download and install them. After that, click Next, when the
"Select the diagnostics you want to run" page appears, select "General",
<and other necessary catalog>, click Next.
3. After collecting all log files, choose "Save the results", choose a
folder to save <Computername>MPSReports.cab file. Please use Windows Live
SkyDrive (http://www.skydrive.live.com/) to upload the file and then let me
know the download address.

Thank you for your cooperation.

Best regards,

Robinson Zhang
Microsoft Online Support