For all you dasBloggers out there...if you want to have nested blogs like I have here:

www.ucsdxcommunity.com

www.ucsdxcommunity.com/ASPNET

...you have to first configure the subdirectory as an IIS application, then remove the <httpModules> section of the web.config in the nested blog. Modules can only be loaded 1x per appdomain, and the nested blog is loaded into the same appdomain by default.

The funny thing is, the error message tells you that it can't load the module twice, so this is actually pretty obvious, but if you are like me, you may have seen this error and started looking for a “bigger“ problem (I always do that...dunno why) ...therefore I didn't pay attention to the error message 'literally“ at first.