>>TBH I doubt it. Can you check the IIS log ( assuming that it is configured to record the relevant info) ?
>
>I do not have the IIS log enabled. The same transaction is done on thousands of times per day, and also several times from the same IP. But, on two isolated situations, the log was not good. That's why I am assuming there is a bug. As, I am reading this information directly from the .NET classes.

Given that the HttpRequest.Url property is readonly (i.e. only set- able via the constructor) it's definitely odd. If you are not newing up an HttpRequest *anywhere* in your code then it does sound like a bug.....