HTTP 408/409 error on Dell webpage dell.com (only XP, not Win7)

Hi community,

We have this problem:

Prerequisites

• on ALL Windows XP Computers
• NOT on Windows 7 Computers (Same network, with IE8 and FF, all Win-Updates installed)
• since approx 2 weeks, before the ordering process worked properly

Error: HTTP 408/409

• Dell.com ordering: Selection of the System is no problem, but...
  ...each time we press the "configure & order" button, after 5 to 30 seconds, it occors.
• only the Dell site has this problem.

What could it be?

Thank you.

Mike

408 Request Timeout

The client did not produce a request within the time that the server was prepared to wait. The client MAY repeat the request without modifications at any later time.

409 Conflict

The request could not be completed due to a conflict with the current state of the resource. This code is only allowed in situations where it is expected that the user might be able to resolve the conflict and resubmit the request. The response body SHOULD include enough

information for the user to recognize the source of the conflict. Ideally, the response entity would include enough information for the user or user agent to fix the problem; however, that might not be possible and is not required.

Conflicts are most likely to occur in response to a PUT request. For example, if versioning were being used and the entity being PUT included changes to a resource which conflict with those made by an earlier (third-party) request, the server might use the 409 response to indicate that it can't complete the request. In this case, the response entity would likely contain a list of the differences between the two versions in a format defined by the response Content-Type.