>>There shouldn't be any relation unless your isolation level is not low or you're running COM+ components. There's some info on DLLHost here:
>>
>>http://support.microsoft.com/kb/290884/EN-US/
>
>On the same box, we have 4 COM Servers running. When I have only that, the DLLHost.exe file, usually two instances in Task Manager, are not affected. But, when this is on a box running also a bunch of VFP EXE running in WWC file mode, this will trigger some process on the DLLHost.exe files. In such a situation, we'll do as you say by doublechecking the IIS settings for that isolation. The default is not low. So, that might be the situation.

Is the DLLHost the "real" DLLHost. I remeber that one worm created a "fake" SVCHOST and a "fake" DLLHost. The fake ones were hi-jackers.