We have a bunch of dealers that have a unique link to a site (eg http://www.comfort.dk/?LockedContractor=2347).
After we have upgraded DynamicWeb we are now redirected to the frontpage (http://www.comfort.dk/Forside.aspx) with a 301.
It is rather problematic, since we use the url parameter in a template extender to create some tags.
We can see that the problem only occurs when the parameters are used directly on the domain, if used on a page it works as intended.
If you disable Customized URLs, it also works fine, which leads us to belive that it is this modul that is causing the error.